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2010-02-06T17:41:02+01:00
A)-1/2(-x-6)=-x
1/2x+3=-x
1/2x-x=-3
-1/2x=-3 //*-2
x=6


b)5/6(x-1)=4
5/6x=4+5/6
5/6x=24/6+5/6
5/6x=29/6 //*6/5
x=29/5=5 i4/5
2010-02-06T17:42:48+01:00
A)1/2x+3=-x
1/2x + x=-3
1 1/2x=-3/:1 1/2
x=-2
b)5/6x-5/6=4
5/6x=4+5/6
5/6x=4 5/6 /:5/6
x=4
2010-02-06T20:51:32+01:00
A)-1/2(-x-6)=-x
1/2 x +3=-x |+x
1,5x+3=0 |-3
1,5x=-3 |/1,5
x=-2

b)5/6(x-1)=4
5/6x-5/6=4 |+5/6
5/6x=4 5/6
5/6x=29/6 |:5/6
x=174/30
x=5 24/30
x=5,8