Respuesta :

-8(r+2) = -168
-8r -16 = -168
-8r = -168 + 16
-8r = - 152
r = -152/-8
r = 19

mmcuebas
- 8 ( r + 2 ) = -168

Distribute the -8 to r and 2.

-8r - 16 = -168

Add 16 on both sides.

-8r = -152

Divide -8 from both sides and solve.

r = 19

(Remember that a negative ÷ negative = a positive!) :)