The goal as always is to get x on one side of the equation. The first thing you need to do is distribute the 3
3(2x+4)
3 times 2x is 6x
3 times 4 is 12
6x+12
Then combine like terms
4x+6x+12=132
10x+12=132
next subtract 12 from both sides
10x=120
divide by 10
x = 12