计算:(2.5×4/5)÷(1/4×0.8)-0.75÷3/40=_.

问题描述:

计算:(2.5×

4
5
)÷(
1
4
×0.8)-0.75÷
3
40
=______.

(2.5×

4
5
)÷(
1
4
×0.8)-0.75÷
3
40

=2÷0.2-
3
4
×
40
3

=10-10,
=0.
故答案为:0.