4/5乘7又3/8+2.625除以1又1/4,怎么简算?

问题描述:

4/5乘7又3/8+2.625除以1又1/4,怎么简算?

4/5×7/3/8+2.625÷1/1/4
=0.8×7/3/8+2/5/8×0.8
=0.8×(7/3/8+2/5/8)
=0.8×10
=8