7分之4*4分之3+0.75+7分之3*75%如题呢.

问题描述:

7分之4*4分之3+0.75+7分之3*75%
如题呢.

=7分之4-0.75+0.75+7分之3*0.75
=(7分之4+1+7分之3)*0.75
=2*0.75
=1.5

4/7×3/4+0.75+3/7×75%
=4/7×3/4+3/4+3/7×3/4
=3/4×(4/7+1+3/7)
=3/4×2
=3/2