Algebra Examples

$(2 x + 1 - \frac{1}{1 - 2 x}) \div (2 x - \frac{4 x^{2}}{2 x - 1})$

Step 1

Rewrite the division as a fraction.

$\frac{2 x + 1 - \frac{1}{1 - 2 x}}{2 x - \frac{4 x^{2}}{2 x - 1}}$

Step 2

Multiply the numerator and denominator of the fraction by $(1 - 2 x) (2 x - 1)$ .

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Step 2.1

Multiply $\frac{2 x + 1 - \frac{1}{1 - 2 x}}{2 x - \frac{4 x^{2}}{2 x - 1}}$ by $\frac{(1 - 2 x) (2 x - 1)}{(1 - 2 x) (2 x - 1)}$ .

$\frac{(1 - 2 x) (2 x - 1)}{(1 - 2 x) (2 x - 1)} \cdot \frac{2 x + 1 - \frac{1}{1 - 2 x}}{2 x - \frac{4 x^{2}}{2 x - 1}}$

Step 2.2

Combine.

$\frac{(1 - 2 x) (2 x - 1) (2 x + 1 - \frac{1}{1 - 2 x})}{(1 - 2 x) (2 x - 1) (2 x - \frac{4 x^{2}}{2 x - 1})}$

Step 3

Apply the distributive property.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (1 - 2 x) (2 x - 1) (- \frac{1}{1 - 2 x})}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) (- \frac{4 x^{2}}{2 x - 1})}$

Step 4

Simplify by cancelling.

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Step 4.1

Cancel the common factor of $1 - 2 x$ .

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Step 4.1.1

Move the leading negative in $- \frac{1}{1 - 2 x}$ into the numerator.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (1 - 2 x) (2 x - 1) \frac{- 1}{1 - 2 x}}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) (- \frac{4 x^{2}}{2 x - 1})}$

Step 4.1.2

Cancel the common factor.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (1 - 2 x) (2 x - 1) \frac{- 1}{1 - 2 x}}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) (- \frac{4 x^{2}}{2 x - 1})}$

Step 4.1.3

Rewrite the expression.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) (- \frac{4 x^{2}}{2 x - 1})}$

Step 4.2

Cancel the common factor of $2 x - 1$ .

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Step 4.2.1

Move the leading negative in $- \frac{4 x^{2}}{2 x - 1}$ into the numerator.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \frac{- 4 x^{2}}{2 x - 1}}$

Step 4.2.2

Factor $2 x - 1$ out of $(1 - 2 x) (2 x - 1)$ .

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (2 x - 1) (1 - 2 x) \frac{- 4 x^{2}}{2 x - 1}}$

Step 4.2.3

Cancel the common factor.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (2 x - 1) (1 - 2 x) \frac{- 4 x^{2}}{2 x - 1}}$

Step 4.2.4

Rewrite the expression.

$\frac{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5

Simplify the numerator.

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Step 5.1

Factor $2 x - 1$ out of $(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1$ .

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Step 5.1.1

Factor $2 x - 1$ out of $(1 - 2 x) (2 x - 1) (2 x)$ .

$\frac{(2 x - 1) ((1 - 2 x) (2 x)) + (1 - 2 x) (2 x - 1) \cdot 1 + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.1.2

Factor $2 x - 1$ out of $(1 - 2 x) (2 x - 1) \cdot 1$ .

$\frac{(2 x - 1) ((1 - 2 x) (2 x)) + (2 x - 1) ((1 - 2 x) \cdot 1) + (2 x - 1) \cdot - 1}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.1.3

Factor $2 x - 1$ out of $(2 x - 1) \cdot - 1$ .

$\frac{(2 x - 1) ((1 - 2 x) (2 x)) + (2 x - 1) ((1 - 2 x) \cdot 1) + (2 x - 1) (- 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.1.4

Factor $2 x - 1$ out of $(2 x - 1) ((1 - 2 x) (2 x)) + (2 x - 1) ((1 - 2 x) \cdot 1)$ .

$\frac{(2 x - 1) ((1 - 2 x) (2 x) + (1 - 2 x) \cdot 1) + (2 x - 1) (- 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.1.5

Factor $2 x - 1$ out of $(2 x - 1) ((1 - 2 x) (2 x) + (1 - 2 x) \cdot 1) + (2 x - 1) (- 1)$ .

$\frac{(2 x - 1) ((1 - 2 x) (2 x) + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.2

Apply the distributive property.

$\frac{(2 x - 1) (1 (2 x) - 2 x (2 x) + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.3

Multiply $2 x$ by $1$ .

$\frac{(2 x - 1) (2 x - 2 x (2 x) + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.4

Rewrite using the commutative property of multiplication.

$\frac{(2 x - 1) (2 x - 2 \cdot 2 x \cdot x + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.5

Simplify each term.

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Step 5.5.1

Multiply $x$ by $x$ by adding the exponents.

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Step 5.5.1.1

Move $x$ .

$\frac{(2 x - 1) (2 x - 2 \cdot 2 (x \cdot x) + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.5.1.2

Multiply $x$ by $x$ .

$\frac{(2 x - 1) (2 x - 2 \cdot 2 x^{2} + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.5.2

Multiply $- 2$ by $2$ .

$\frac{(2 x - 1) (2 x - 4 x^{2} + (1 - 2 x) \cdot 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.6

Multiply $1 - 2 x$ by $1$ .

$\frac{(2 x - 1) (2 x - 4 x^{2} + 1 - 2 x - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.7

Subtract $2 x$ from $2 x$ .

$\frac{(2 x - 1) (- 4 x^{2} + 1 + 0 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.8

Add $- 4 x^{2}$ and $0$ .

$\frac{(2 x - 1) (- 4 x^{2} + 1 - 1)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.9

Subtract $1$ from $1$ .

$\frac{(2 x - 1) (- 4 x^{2} + 0)}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 5.10

Add $- 4 x^{2}$ and $0$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})}$

Step 6

Simplify the denominator.

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Step 6.1

Factor $(1 - 2 x) \cdot 2 x$ out of $(1 - 2 x) (2 x - 1) (2 x) + (1 - 2 x) (- 4 x^{2})$ .

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Step 6.1.1

Factor $(1 - 2 x) \cdot 2 x$ out of $(1 - 2 x) (2 x - 1) (2 x)$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot 2 x (2 x - 1) + (1 - 2 x) (- 4 x^{2})}$

Step 6.1.2

Factor $(1 - 2 x) \cdot 2 x$ out of $(1 - 2 x) (- 4 x^{2})$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot 2 x (2 x - 1) + (1 - 2 x) \cdot 2 x (- 2 x)}$

Step 6.1.3

Factor $(1 - 2 x) \cdot 2 x$ out of $(1 - 2 x) \cdot 2 x (2 x - 1) + (1 - 2 x) \cdot 2 x (- 2 x)$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot 2 x (2 x - 1 - 2 x)}$

Step 6.2

Subtract $2 x$ from $2 x$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot 2 x (0 - 1)}$

Step 6.3

Subtract $1$ from $0$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot 2 x \cdot - 1}$

Step 6.4

Multiply $- 1$ by $2$ .

$\frac{(2 x - 1) \cdot - 4 x^{2}}{(1 - 2 x) \cdot - 2 x}$

Step 7

Reduce the expression by cancelling the common factors.

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Step 7.1

Cancel the common factor of $- 4$ and $- 2$ .

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Step 7.1.1

Factor $- 2$ out of $(2 x - 1) \cdot - 4 x^{2}$ .

$\frac{- 2 ((2 x - 1) \cdot 2 x^{2})}{(1 - 2 x) \cdot - 2 x}$

Step 7.1.2

Cancel the common factors.

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Step 7.1.2.1

Factor $- 2$ out of $(1 - 2 x) \cdot - 2 x$ .

$\frac{- 2 ((2 x - 1) \cdot 2 x^{2})}{- 2 ((1 - 2 x) x)}$

Step 7.1.2.2

Cancel the common factor.

$\frac{- 2 ((2 x - 1) \cdot 2 x^{2})}{- 2 ((1 - 2 x) x)}$

Step 7.1.2.3

Rewrite the expression.

$\frac{(2 x - 1) \cdot 2 x^{2}}{(1 - 2 x) x}$

Step 7.2

Cancel the common factor of $x^{2}$ and $x$ .

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Step 7.2.1

Factor $x$ out of $(2 x - 1) \cdot 2 x^{2}$ .

$\frac{x ((2 x - 1) \cdot 2 x)}{(1 - 2 x) x}$

Step 7.2.2

Cancel the common factors.

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Step 7.2.2.1

Factor $x$ out of $(1 - 2 x) x$ .

$\frac{x ((2 x - 1) \cdot 2 x)}{x (1 - 2 x)}$

Step 7.2.2.2

Cancel the common factor.

$\frac{x ((2 x - 1) \cdot 2 x)}{x (1 - 2 x)}$

Step 7.2.2.3

Rewrite the expression.

$\frac{(2 x - 1) \cdot 2 x}{1 - 2 x}$

Step 7.3

Cancel the common factor of $2 x - 1$ and $1 - 2 x$ .

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Step 7.3.1

Factor $- 1$ out of $2 x$ .

$\frac{(- (- 2 x) - 1) \cdot 2 x}{1 - 2 x}$

Step 7.3.2

Rewrite $- 1$ as $- 1 (1)$ .

$\frac{(- (- 2 x) - 1 (1)) \cdot 2 x}{1 - 2 x}$

Step 7.3.3

Factor $- 1$ out of $- (- 2 x) - 1 (1)$ .

$\frac{- (- 2 x + 1) \cdot 2 x}{1 - 2 x}$

Step 7.3.4

Rewrite $- (- 2 x + 1)$ as $- 1 (- 2 x + 1)$ .

$\frac{- 1 (- 2 x + 1) \cdot 2 x}{1 - 2 x}$

Step 7.3.5

Reorder terms.

$\frac{- 1 (- 2 x + 1) \cdot 2 x}{- 2 x + 1}$

Step 7.3.6

Cancel the common factor.

$\frac{- 1 (- 2 x + 1) \cdot 2 x}{- 2 x + 1}$

Step 7.3.7

Divide $- 1 \cdot 2 x$ by $1$ .

$- 1 \cdot 2 x$

Step 7.4

Multiply $- 1$ by $2$ .

$- 2 x$