(5x-1)-(3x+2)-[1-(1-x)-(x+2]=?
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(5x-1)-(3x+2)-[1-(1-x)-(x+2)]=5x-1-3x-2-(1-1+x-x-2)=2x-3-(-2)=2x-1
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(5x-1)-(3x+2)-[1-(1-x)-(x+2)]=5x-1-3x-2-(1-1+x-x-2)=2x-3-(-2)=2x-1