Answer:
x
Step-by-step explanation:
So you start by putting the like terms together which will be
9x-3x=6x
You then open the brackets at the other part of the question
3 x 2x+3 x 4=6x+12
The question now becomes
6x +12=6x+12
Take 12 to the other side and minus.You will be left with
6x=6x
Simplify and your left with x which is your answer
