Odpowiedzi

2010-04-10T16:17:41+02:00
2x+22-(-5-2x)=21+3x
2x+22+5-2x=21+3x
2x-2x-3x=21-22-5
-3x=-6 | : (-3)
x=2
2010-04-10T16:18:01+02:00
2x + 22 - (-5 - 2x) = 21 + 3x
2x+22+5+2x=21+3x
2x+2x-3x=21-22-5
x=-6