# How do you solve 12r+34=-6r-(-9)?

Jun 16, 2017

$r = - \frac{25}{18}$

#### Explanation:

$12 r + 34 = - 6 r - \left(- 9\right)$

add $6 r$ to both sides
$12 r + 34 + 6 r = - 6 r + 9 + 6 r$
$18 r + 34 = 9$

minus $34$ to both sides
$18 r + 34 - 34 = 9 - 34$
$18 r = - 25$

divide by $18$ to both sides
$\frac{18 r}{18} = - \frac{25}{18}$
$r = - \frac{25}{18}$