Pre-Algebra Examples

$- 8 r + 7 = 7 - 7 r + 8$

Step 1

Add $7$ and $8$ .

$- 8 r + 7 = - 7 r + 15$

Step 2

Graph each side of the equation. The solution is the x-value of the point of intersection.

$r = - 8$

Step 3