How do you solve |7r-4|=24?

Jan 28, 2017

The solutions are $S = \left\{4 , - \frac{20}{7}\right\}$

Explanation:

We have 2 equations to solve

First equation :

$7 r - 4 = 24$

$7 r = 24 + 4 = 28$

$r = \frac{28}{7} = 4$

Second equation :

$- 7 r + 4 = 24$

$7 r = - 24 + 4 = - 20$

$r = - \frac{20}{7}$