tentukan nilai x tolng bntu donk

1)
3x + 2 = 6x - 4
2 + 4 = 6x - 3x
6 = 3x
2 = x

2)
2(x+3) + 7(x-3) = 5(x-1)
2x+6 + 7x-21 = 5x-5
2x + 7x -5x = -5-6+21
4x = 10
x = 2,5

3)
x - 3 / 2 = 2x + 4 / 5
5x - 15 = 4x + 8
5x - 4x = 8 + 15
x = 23