Question #350807

102-45

Expert's answer

102−45=(100+2)−(40+5)=100+2−40−5=(100−40)+(2−5)=60+(−3)=60−3=57102-45=(100+2)-(40+5)=100+2-40-5=(100-40)+(2-5)=60+(-3)=60-3=57

Answer: 57


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