Odpowiedź :
Odpowiedź:
a)
4(x + 1) = 4
4x + 4 = 4
4x = 4 - 4
4x = 0
x = 0
b)
3x + 4 = 6x - 2
3x - 6x = -2 - 4
-3x = -6 /:(-3)
x = 2
c)
2(x - 2) = 3
2x - 4 = 3
2x = 3 + 4 /:2
x = 7/2 = 3 1/2
d)
3(x - 1) = 2(x + 5)
3x - 3 = 2x + 10
3x - 2x = 10 + 3
x = 13
e)
6(x - 1) = 2x + 2
6x - 6 = 2x + 2
6x - 2x = 2 + 6
4x = 8 /:4
x = 2
f)
-5(x - 7) = -15
-5x + 35 = -15
-5x = -15 - 35 /:(-5)
x = 50/5 = 10
Szczegółowe wyjaśnienie: