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2009-12-20T16:11:42+01:00
C)
3-2x/7=x+4/2 *14
6-4x=7x+28
-11x=22
x=-2

d)
x+2/x-1=1/4 *4(x-1)
4x+8=x-1
3x=-9
x=-3
2009-12-20T16:23:10+01:00
C)
3-2×/7 = ×+4/2 / *14
2 (3-2x) = 7 (x + 4)
6 - 4x = 7x + 28
- 11x = 22 /:(-11)
x = -2

d)
×+2/×-1 = ¼ / * 4(x - 1)
4 (x + 2) = (x - 1)
4x + 8 = x - 1
3x = -9 /:3
x = -3