x+4+x+3=10
(-x+4)+x-3=10
x+4-(x-3)=10
-(x+4)-(x+3)=10
x1=4,5; x2=5,5
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x+4+x+3=10
(-x+4)+x-3=10
x+4-(x-3)=10
-(x+4)-(x+3)=10
x1=4,5; x2=5,5