a) 123-3x=24
3x=123-24
3x=99
x=99:3
x=33
Vậy x=33.
b) (x-36):12=6
x-36=6.12
x-36=72
x=72+36
x=108
Vậy x=108.
a. 123-3x=24=3x
3x=123-24
3x=99
x=99:3
x=33
a, 123-3x=24
3x=123-24
3x=99
x=99:3
x=33
Vậy x=33
b,(x-36):12=6
x-36=6.12
x-36=72
x=72+36
x=108
Vậy x=108