Odpowiedzi

2010-03-22T13:27:29+01:00
2 - 3x : 1- 2x = - ½ / * (1-2x)
2-3x = -½ * (1-2x)
2-3x = -½ + x / -2
-3x = -2½ + x / -x
-4x = -2½ / : (-4)
x = 0,625.

pozdrawiam ; )

2010-03-22T13:27:57+01:00
2-3x/1-2x=-1/2
2-3x:(1-2x)=-1/2
2-3x × 1-1/2x=-1/2
2-3x-1/2x=-1/2 /-2
-3 1/2x = -2 1/2 /:(-3 1/2)
x=-2 1/2 × (-2/7)
x=-5/2 × (-2/7)
x=-5/7