1) (5X+7)+(-2X+3)=5X-2X+7+3=3X+10
2) (6a-b)+(3b-5a)=6a-5a-b+3b=a+2b
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1) (5X+7)+(-2X+3)=5X-2X+7+3=3X+10
2) (6a-b)+(3b-5a)=6a-5a-b+3b=a+2b