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2010-02-12T03:47:56+01:00
7 1/2+4x = -0,5
15/2 + 4x = - 1/2
4x = -1/2 - 15/2
4x = -16/2
4x = -8
x = (-8) :4
x = -2


-4x-3(2x-1) = 7
-4x -6x +3 = 7
-10x = 7 -3
-10x = 4
x = 4 : (-10)
x = -0,4


-5x+4(2x+3) = -3
-5x +8x + 12 = -3
3x = -3 -12
3x = -15
x = (-15) :3
x = -5

1/3 x +(2x+1)=1/2x+(x+2 1/3)
1/3x + 2x + 1 = 1/2x + x + 7/3 /*6
2x + 12x + 6 = 3x + 6x + 14
14x +6 = 9x+14
14x -9x = 14 -6
5x = 8
x = 8 : 5
x = 8/5
x = 1,6