Hej!
3x - 8 = -7
3x = -7 + 8
3x = 1 / : 3
x = 1/3
4x - 2 = -2
4x = -2 + 2
4x = 0 / : 4
x = 0
15x + 19 = 10
15x = 10 - 19
15x = -9 / : 15
x = -9/15 = -3/5
3x - 8 = 2x + 4
3x - 2x = 4 + 8
x = 12
5x - 3 = 4x + 6
5x - 4x = 6 + 3
x = 9
7x - 9 = 6x - 8
7x - 6x = -8 + 9
x = 1
Pozdrawiam! - Julka