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x-3=x-3

3x+1=3-(2-2x)

3x-2-3(-1+2x)=2-2(x-1)

2-(3-2(x+1))=3x+2(x-(3+2x))

3x/2+2x/3=1+3x/2

12x+5=41

2x+2-3x+5=3+2

5x/3-(x/3+x)=-x

7x+2+4x=5x+32

5(2+x)=2x +31

0

3/4

5

3

3

-7

7

-3

2

x ∈ R