Question

二分之一加括号四分之三加二五分之四括回除以十分之七的简便方法

Answer 1

1/2+(3/4+4/25)/(7/10)
=1/2+(75/100+16/100）*10/7
=1/2+75/70+16/70
=(35+75+16)/70
=126/70
=9/5