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4-2x-x-3=x-5-3-x
1-3x=-8
-3x=-9 |:-3
x=3
4-3x-3=-2x-8
1-3x=-2x-8
-3x+2x=-8+1
-x=-7 // *(-1)
x=7
4-2x-x-3=x-5+3+x
1-3x=-2 /+1
-3x=-1 /:(-3)
x=1/3