123456+234567+345678的简算
解,得:
==123456+(123456+111111)+(123456+222222)
==123456*3+333333
==3(123456+111111)
==3*234567
==703701
123456+234567+345678的简算
解,得:
==123456+(123456+111111)+(123456+222222)
==123456*3+333333
==3(123456+111111)
==3*234567
==703701