Pre-Algebra Examples

$(x - 4) + (2 x - 7)$

Step 1

Remove parentheses.

$x - 4 + 2 x - 7$

Step 2

Add $x$ and $2 x$ .

$3 x - 4 - 7$

Step 3

Subtract $7$ from $- 4$ .

$3 x - 11$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$