Пошаговое объяснение:
1) 2x=9-x
2x+x = 9
3x = 9
x = 9:3
x = 3
2) -5x-8=22+x
x + 5x = -8 - 22
6x = -30
x = -30:6
x = -5
3) -(2-3x) +4=(-3+x)
-2 + 3x + 4 = -3 + x
2 + 3x = -3 + x
3x - x = -3 - 2
2x = -5
x = -5:2
x = -2,5
4) 5/6(6x-12) =-3(x+2) -4
5x - 10 = -3x - 6 - 4
5x - 10 = -3x - 10
5x + 3x = -10 + 10
8x = 0
x = 0
Пошаговое объяснение:
1) 2x=9-x
2x+x = 9
3x = 9
x = 9:3
x = 3
2) -5x-8=22+x
x + 5x = -8 - 22
6x = -30
x = -30:6
x = -5
3) -(2-3x) +4=(-3+x)
-2 + 3x + 4 = -3 + x
2 + 3x = -3 + x
3x - x = -3 - 2
2x = -5
x = -5:2
x = -2,5
4) 5/6(6x-12) =-3(x+2) -4
5x - 10 = -3x - 6 - 4
5x - 10 = -3x - 10
5x + 3x = -10 + 10
8x = 0
x = 0