Odpowiedzi

2010-04-13T16:25:57+02:00
(4-2x)-(x+3)=(x-5)+(-3-x)
4-2x-x-3=x-5-3-x
-2x-x-x+x=-5-3-4
-5x=-12 /:(-5)
x= 2 2/5
2010-04-13T16:28:35+02:00
(4 - 2x) - (x + 3) = x - 5 + (-3 - x)
4 - 2x - x - 3 = x - 5 - 3 - x
-2x - x - x +x = -5 - 3 - 4 + 3
- 3x = 9 | :(-3)
x = -3