Odpowiedzi

2010-03-29T20:59:54+02:00
X-5/4 - x+1/2 = 5-x
7/4 = 5 - x
7/4 = 20/4 - x
-13/4 = -x
x = 3 1/4 (trzy i jedna czwarta)
2010-03-29T21:00:03+02:00
4x-5-4x+2=20-4x
-3=20-4x
-23=-4x/:(-4)
x=5 i 3/4
2010-03-29T21:00:14+02:00
X-5/4 - x+1/2 = 5-x

x + x - x = 5 + 5/4 - 1/2
x = 5 + 5/4 - 2/4
x= 5 3/4