Question

12 х - х = 55
2 (х+3)= 16
5 (х+3)+7 =3 (х+12)
5х+ 15 + 7= 3х + 36

Answer 1

1)11x=55
x=55/11
x=5
2)2x+6=16
2x=22
x=22/2
x=11
3)5x+15+7=3x+36
2x=14
x=14/2
x=7
4)2x=14
x=14/2
x=7