`1 - (1/5 + 1/2 )` `=` `?`

2 câu trả lời

`#Aka#`

 `1` `-` `(1/5 + 1/2)`

`=` `1` `-` `(2/10 + 5/10)`

`=` `1` `-` `7/10`

`=``10/10` `-` `7/10`

`=` `3/10`

1-(1/5+1/2)

=1-(2/10-5/10)

=1-(-3/10)

=1+3/10

=10/10+3/10

=13/10