-15+2=-13
-42+(-58)=-100
-20-7=-27
-19-(-7)=-12
37-(-17)=54
x-41 1/5=11 1/2
x=52 7/10
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-15+2=-13
-42+(-58)=-100
-20-7=-27
-19-(-7)=-12
37-(-17)=54
x-41 1/5=11 1/2
x=52 7/10