How do you solve \frac { 1} { 3} ( 21- 3x ) = \frac { 1} { 2} ( 8- 4x )?

1 Answer
Apr 10, 2018

x=-3

Explanation:

Here is the math that I did, in steps. To get rid of the fractions I multiplied the sides by their reciprocal's.

1/3 (21-3x)=1/2(8-4x)

2(21-3x)=3(8-4x)

42-6x=24-12x

42=24-6x

18=-6x

-3=x

x=-3