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10=2
-(2x-1)=4
1x=4
2x = -6 /: 2
x=-3
-(2x-1)=4
-2x +1 = 4
-2x = 3 /: -2
x = -1½
10-4=-2x
-2x=6/(-2)
x= -3
b). -(2x-1)=4
-2x+1=4
-2x=4-1
-2x=3
x=3/2
x=1 i 1/2