Odpowiedź :
a) -4x = 15 | /-4 x = -3,75
b) 3x = 72 | /3 x = 24
c) 9x = -18 | /9 x = -2
d) -4x - 4 = 4 | +4 -4x = 8 | /-4 x = -2
e) 3x + 7x - 15 - 2 = 0 | + 17 10x = 17 | /10 x = 1,7
a) -4x = 15 | /-4 x = -3,75
b) 3x = 72 | /3 x = 24
c) 9x = -18 | /9 x = -2
d) -4x - 4 = 4 | +4 -4x = 8 | /-4 x = -2
e) 3x + 7x - 15 - 2 = 0 | + 17 10x = 17 | /10 x = 1,7