1)-10+3+(-4)=-11; 3)-5+8+(-5)=-2
2)-3+3(-9.5)=-9.5; 4)-9+7+(-7)=-9
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1)-10+3+(-4)=-11; 3)-5+8+(-5)=-2
2)-3+3(-9.5)=-9.5; 4)-9+7+(-7)=-9