Odpowiedź :
Hej!
a]
4x - 2 = -2
4x = -2 + 2
4x = 0 || : 4
x = 0
b]
7x - 5 = 6x - 9
7x - 6x = -9 + 5
x = -4
c]
7(x + 2) - x = 5(x - 2)
7x + 14 - x = 5x - 10
7x - x - 5x = -10 - 14
x = -24
Hej!
a]
4x - 2 = -2
4x = -2 + 2
4x = 0 || : 4
x = 0
b]
7x - 5 = 6x - 9
7x - 6x = -9 + 5
x = -4
c]
7(x + 2) - x = 5(x - 2)
7x + 14 - x = 5x - 10
7x - x - 5x = -10 - 14
x = -24