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2010-04-15T15:44:43+02:00
A)⅓(3x-2)=2
x-2/3=2
x=2+2/3
x=6/3+2/3
x=8/3

b)x+3
__ *8=x-3
2

(x+3)*4=x-3
4x+12=x-3
3x=-15
x=-5

c)2(x+7)=3(2x-5)
2x+14=6x-15
4x=29
x=29/4
2010-04-15T15:52:33+02:00
⅓(3x-2)=2
x- 2/3 = 2
x=8/3


x+3
__ *8=x-3 /*2
2
8(1/2 x + 3/2) = x -3
4x +12 = x -3
3x = -15 /:3
x=-5

2(x+7)=3(2x-5)
2x + 14 = 6x - 15
-4x = -29 /:(-4)
x= 29/4
x= 7 1/4