Question

How do you subtract `2\frac { 4} { 5} - 1\frac { 2} { 5} - \frac { 5} { 8}`?

Answer 1

`31/40`

Explanation:

First we should remove all the mixed numbers and turn them into fractions.

`2 4/5` can be rewritten as `10/5 + 4/5 = 14/5`.
`1 2/5` can be rewritten as `5/5 + 2/5 = 7/5`.

Next we should give all the fraction the same denominator.

`14/5 * 8/8 = 112/40`
`7/5 * 8/8 = 56/40`
`5/8 * 5/5 = 25/40`

Now we can solve.

`112/40 - 56/40 - 25/40 = (112-56-25)/40 = 31/40`