1)-7+2= -(7-2)=5
2)-4-2= -(4+2)=6
3)-5•(-6)=5×6=30
4)32:(-4)= -(32:4)= -8
5)-15-(-20)= -15+20=5
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1)-7+2= -(7-2)=5
2)-4-2= -(4+2)=6
3)-5•(-6)=5×6=30
4)32:(-4)= -(32:4)= -8
5)-15-(-20)= -15+20=5