I got you Bro The answer Is easy is 3Х-12=0 I will explain how I got the answer. And if you are using a computer go to CYMATH is give you 90-100 all the answer of math you just put the equation and you got the answer and how you solve.
I hope what I do help you Bro
1) Drop the absolute value, since this equation sums to zero. 3Х-12=0
2) Solve the 1st equation: 3Х-12=0 (How) Х=4 (How) 1) Add 12 to both sides 3Х=12 2) Divide both sides by 3 Х=(12/3)