Odpowiedź :
Odpowiedź:
a. 4x = -5 - 15
4x = -20 /:4
x = -5
b. 2x + 7 = 4x - 3
2x - 4x = -3 - 7
-2x = -10 /:-2
x = 5
c. -2 (x + 3) + 4 (2x + 3) = -6
-2x - 6 + 8x + 12 = -6
6x = -12 /:6
x = -2
Odpowiedź:
a. 4x = -5 - 15
4x = -20 /:4
x = -5
b. 2x + 7 = 4x - 3
2x - 4x = -3 - 7
-2x = -10 /:-2
x = 5
c. -2 (x + 3) + 4 (2x + 3) = -6
-2x - 6 + 8x + 12 = -6
6x = -12 /:6
x = -2