1) 4x - 2 + 5x = 15
9x = 15 + 2
9x = 17 l : 9
x = [tex]\frac{17}{9}[/tex]
x = 1[tex]\frac{8}{9}[/tex]
2) 5x + 7 - 3x = 13
2x = 13 -7
2x = 6 l : 2
x = 3
3) 6x = 2x - 8
6x - 2x = -8
4x = -8 l : 4
x = -2
4) 8x = 9 + 5x
8x - 5x = 9
3x = 9 l : 3
x = 3
5) 8 - 3x = 6x - 10
-3x - 6x = -10 - 8
-9x = -18 l : (-9)
x = 2
6) 7x - 4 = 9 + 8x
7x - 8x = 9 + 4
-x = 13 l : (-1)
x = -13
7) 5x - 3 + 2x = 4x + 9
7x - 4x = 9 + 3
3x = 12 l : 3
x = 4
8) 8x - 6 -9x = 5x - 6
-x - 5x = -6 + 6
-6x = 0 l : (-6)
x = 0
Nie sugeruj się tym bo nie wiem czy jest dobrze