Mulțumesc anticipat!

[156-2(3x+5)]:2=4
156-2(3x+5)=4×2
156-2(3x+5)=8
2(3x+5)=156-8
2(3x+5)=148
3x+5=148:2
3x+5=74
3x=74-5
3x=69
x=69:3
x=23