bonjour 2x-11=7x+4 merci

Rebonjour,
2x - 11 = 7x + 4
2x -11 -7x -4 = 0
-5x -15 = 0
-15 = 5 x
-15/5 = x
-3 = x
bonne journée

2x-7x-11=4
-5x-11=4
-5x=4+11
-5x=15
-5x:(-5)=15:(-5)
x=(-3)