2.(x - 3) + 6 = 18
2.(x - 3) = 18 - 6
2.(x - 3) = 12
x - 3 = 12:2
x - 3 = 6
x = 6 + 3
x = 9
Vậy x = 9
2.(x-3)+6=18
2.(x-3) = 12
x-3 = 6
x =9
2(x-3)+6=18
=>2x-6+6=18
=>2x+(-6+6)=18
=>2x=18
=>x=15/2
2x(X-3)+6=18
2x(x+3)=18-6
2x(X+3)=12
X+3=12:2
X+3=6
x=6+3
X=9
k ủng hộ rồi GLM kp vs tớ lun nha
2*(x-3)+6=18
2*(x-3) =18-6
2*(x-3) =12
x-3 =12:2
x-3 =6
x =6+3
x =9