用简便方法计算73x21/37十16/37x75
用简便方法计算73x21/37十16/37x75
日期：2021-10-28 11:40:34 人气：1
用简便方法计算73x21/37十16/37x75
=74/37x21-21/37+74/37x16+16/37
=2x(21+16)-(21/37-16/37)
=2x37-5/37
=74-5/37
=73又37分之32
=74/37x21-21/37+74/37x16+16/37
=2x(21+16)-(21/37-16/37)
=2x37-5/37
=74-5/37
=73又37分之32