How do you solve - 3( 4r - 8) = - 36?

1 Answer
Nov 11, 2017

-3(4r - 8) = -36

distribute the -3 to the terms in the parentheses

-12r - 24 = -36

Isolate the variable by adding -24 to both sides of the equation

-12 r = -12

Divide both sides by a form of one to simplify and isolate variable further

(-12r)/-12 = (cancel-12)/(cancel(-)12)

r = 1

check answer

-3 (4 (1) - 8) = -36

-12 - 24 = -36

true