Ответ:
Пошаговое объяснение:
3(х-2)=4х
3x - 6 = 4x
4x - 3x = -6
x = -6
6(z-1)=18
6z - 6 = 18
6z = 18 + 6
6z = 24
z = 24 : 6
z = 4
5(y+3)=10
y + 3 = 10:5
y + 3 = 2
y = 2 - 3
y = -1
3(2x-7)=9
6x - 21 = 9
6x = 9+21
6x = 30
x = 30 :6
x = 5
-4(x-2)=-6
-4x + 8 = -6
4x = 8+6
4x = 14
x = 14 : 4
x = 3,5
3(x-5)=x+3
3x - 15 = x + 3
3x - x = 3 + 15
2x = 18
x = 18 : 2
x = 9
5
15*15:(13*13-124)=225:(169-124)=225:45=5