1) =12×(-5)=-60=48-(-60)=108
2)=45×(-6)=270=456-270=186
3)=-12×(-5)=60=69-60=9
4)=-45×7=-315=158-(-315)=473
5)=-15×9=-135=129-(-135)=264
6)=-13×(-7)=91=258-91=167
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1) =12×(-5)=-60=48-(-60)=108
2)=45×(-6)=270=456-270=186
3)=-12×(-5)=60=69-60=9
4)=-45×7=-315=158-(-315)=473
5)=-15×9=-135=129-(-135)=264
6)=-13×(-7)=91=258-91=167