4x+6=2x+18 pake cara plissssss

4x + 6 = 2x + 18
4x – 2x = 18 – 6
2x = 12
x = 12/2
x= 6

4x+6 = 2x+18
4x-2x = -6 + 18 
2x = 12
x = 12 dibagi 2
x = 6