简便计算 51分之49乘23

问题描述:

简便计算 51分之49乘23

49/51*23=1127/51

等于51分之1127

1

49/51×23
=(1-2/51)×23
=1×23-2/51×23
=23-46/51
=22又51分之46

49/51*23=(51-2)/51*23=23-2/51*23=22又5/51