# How do you solve 8( r - 8) + 4r = - 136?

Apr 12, 2018

$r = - 6$

#### Explanation:

$8 \left(r - 8\right) + 4 r = - 136$ (Distribute 8 to the number in braces)

$8 r - 64 + 4 r = - 136$ (Combine like terms)

$12 r - 64 = - 136$ (Add 64 to both sides)

$12 r = - 72$ (Divide both sides by 12)

$r = - 6$

Check the answer by plugging into the original equation:

$8 \left(- 6 - 8\right) + 4 \left(- 6\right) = - 136$

$8 \left(- 14\right) - 24 = - 136$

$- 112 - 24 = - 136$

$- 136 = 136$