Algebra Examples

$\frac{5 x}{3 x - 9}$ , $x = 4$

Step 1

Replace the variable $x$ with $4$ in the expression.

$\frac{5 (4)}{3 (4) - 9}$

Step 2

Multiply $5$ by $4$ .

$\frac{20}{3 (4) - 9}$

Step 3

Simplify the denominator.

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Step 3.1

Multiply $3$ by $4$ .

$\frac{20}{12 - 9}$

Step 3.2

Subtract $9$ from $12$ .

$\frac{20}{3}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$\frac{20}{3}$

Decimal Form:

$6.\overline{6}$

Mixed Number Form:

$6 \frac{2}{3}$