4分之3乘9减4分之3.,急

问题描述:

4分之3乘9减4分之3.,急

4分之3乘9减4分之3.,急
= 3/4 x 9 - 3/4 x 1
= 3/4 x ( 9-1)
= 3 /4 x 8
= 6