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3x-6+5=4-3,5x
3x+3,5x=6-5+4
6,5x=3/6,5
x=2,16...
-(1-x)+1=x
-1+x+1=x
x-x=-1-1
-x=-2 /-1
x=2
3/4x-28= 10x+56
3/4 x -10x=56+28
9 i 1/4x=84
3x-6+5=4-3,5x
3x+3,5x=4+6-5
6,5x=5/:6,5
x~~0,77