1) 6(x+1) - 2 = 4x
6x + 6 - 2 = 4x
6x - 4x = -4
2x = -4 /:2
x = -2
-2 = -2
TAK - L = P
2) 7x = 5 + 9
7x = 14 /:7
x = 2
spr: 7*2 - 9 = 5
14 - 9 = 5
5 = 5
L = P
3) 9 - 2x = 17 - 4x
9 - 17 = -4x + 2x
-8 = -2x /:(-2)
4 = x
spr: 9 - 2* 4 = 17 - 4* 4
9 - 8 = 17 - 16
1 = 1
L = P
4) 2(x+1) + 6 = 4(2 - 3x) - 4
2x + 2 + 6 = 8 - 12x - 4
2x + 12x = 8 - 4 - 2 - 6
14x = -4 /:14
x = -2/7