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2x=3+3
x=(3+3)/2=3
b) 8x+7=4x+3
4x=-4
x=-4/4= -1
c) 3(1-x)=0
3-3x=0
3x=3
x=3/3=1
2x-3=3|+3
2x=6 |:2
x=3
b)
8x+7=4x+3|-4x
4x+7=3|-7
4x=-4 |:4
x=-1
c)
3(1-x)=0|:3
1-x=0|-1
-x=-1
x=1
2x=3+3
2x=6/2
x=3
b)8x+7=4x+3
8x-4x=3-7
4x=-4/4
x=-1
c)3(1-x)=0
3-3x=0
-3x=-3/*(-1)
3x=3/3
x=1