Odpowiedź :
Odpowiedź:
5(3x - 2) = 2(2x + 1)
15x - 10 = 4x + 2
15x - 4x = 2 + 10
11x = 12 /:11
x = 12/11 = 1 1/11
2(x + 20) + 2x = 48
2x + 40 + 2x = 48
4x = 48 - 40 /:4
x = 8/4 = 2
2(x + 2) = 3(x + 2) + x + 1
2x + 4 = 3x + 6 + x + 1
2x - 4x = 7 - 4
-2x = 3 /:(-2)
x = -3/2 = -1 1/2
6x + 8 = 4x + 20
6x - 4x = 20 - 8
2x = 12 /:2
x = 6
2(3x + 4) = -(-4 - 8)
6x + 8 = 4 + 8
6x = 12 - 8 /:6
x = 4/6 = 2/3
Szczegółowe wyjaśnienie: