Algebra Examples

$a + (a - b) + (- a + b)$

Step 1

Remove parentheses.

$a + a - b - a + b$

Step 2

Combine the opposite terms in $a + a - b - a + b$ .

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Step 2.1

Subtract $a$ from $a$ .

$a - b + 0 + b$

Step 2.2

Add $a - b$ and $0$ .

$a - b + b$

Step 2.3

Add $- b$ and $b$ .

$a + 0$

Step 2.4

Add $a$ and $0$ .

$a$