Pre-Algebra Examples

$(- 3 x - 7) + (4 x + 7)$

Step 1

Remove parentheses.

$- 3 x - 7 + 4 x + 7$

Step 2

Combine the opposite terms in $- 3 x - 7 + 4 x + 7$ .

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Step 2.1

Add $- 7$ and $7$ .

$- 3 x + 4 x + 0$

Step 2.2

Add $- 3 x + 4 x$ and $0$ .

$- 3 x + 4 x$

Step 3

Add $- 3 x$ and $4 x$ .

$x$