Question

七分之三加二分之三的和乘以二十五分之七除以十分之九怎么简算?急

Answer 1

(3/7+3/2)×7/25÷9/10

=(3/7+3/2)×7/25×10/9

=(3/7+3/2)×14/45

=3/7×14/45+3/2×14/45

=2/15+7/15

=3/5

愿对你有所帮助!