How do you solve \frac { 3} { 9} ( x + 6) = 1239(x+6)=12?

1 Answer
Oct 15, 2017

x=30x=30

Explanation:

Begin by multiplying both sides by 9/393, the reciprocal of 3/939 to cancel the fraction on the left.

(cancel9/cancel3)(cancel3/cancel9)(x+6)=12(9/3)

Simplifying gives

x+6=36

Subtract 6 from both sides to get

x=30

(At the beginning you also could have simplified 3/9 to 1/3 to make the problem a bit easier)