Odpowiedź :
Hej!
-12x - 6 = -30
-12x = -30 + 6
-12x = -24 / : (-12)
x = 2
24x + 12 = -60
24x = -60 - 12
24x = -72 / : 24
x = -3
7x - 4 = 38
7x = 38 + 4
7x = 42 / : 7
x = 6
2x - 13 = 12
2x = 12 + 13
2x = 25 / : 2
x = 12,5
Pozdrawiam! - Julka
Hej!
-12x - 6 = -30
-12x = -30 + 6
-12x = -24 / : (-12)
x = 2
24x + 12 = -60
24x = -60 - 12
24x = -72 / : 24
x = -3
7x - 4 = 38
7x = 38 + 4
7x = 42 / : 7
x = 6
2x - 13 = 12
2x = 12 + 13
2x = 25 / : 2
x = 12,5
Pozdrawiam! - Julka