Question

4又十五分之七乘以15怎么算还有一题45乘以（九分之七+十五分之四-五分之三）

Answer 1

=（4+7/15）*15

=4*15+7/15*15

=60+7=67

=45*7/9+45*4/15-45*3/5

=35+12-27

=20