计算下面各题．（能简算的要简算）9-920÷9（59-512）×361.54×85+8.46×160%94×25+274÷52+0.4．

Question

计算下面各题．（能简算的要简算）
9-(9)/(20)÷9                         
（(5)/(9)-(5)/(12)）×36
1.54×(8)/(5)+8.46×160%                 
(9)/(4)×(2)/(5)+(27)/(4)÷(5)/(2)+0.4．

Answer 1

（1）9-(9)/(20)÷9 
=9-(9)/(20)×(1)/(9)
=9-(1)/(20)
=8(19)/(20)

（2）（(5)/(9)-(5)/(12)）×36
=(5)/(9)×36-(5)/(12)×36
=20-15
=5

（3）1.54×(8)/(5)+8.46×160% 
=1.54×1.6+8.46×1.6
=（1.54+8.46）×1.6
=10×1.6
=16

（4）(9)/(4)×(2)/(5)+(27)/(4)÷(5)/(2)+0.4
=(9)/(4)×(2)/(5)+(27)/(4)×(2)/(5)+(2)/(5)
=(2)/(5)×（(9)/(4)+(27)/(4)+1）
=(2)/(5)×10
=4