Question

How do you evaluate `\frac { 5} { 9} - \frac { 1} { 9} + \frac { 7} { 9}`?

Answer 1

`1.bar2`

Explanation:

Since all the denominators are the same, you can just add and subtract the numerators:
`5/9-1/9+7/9=(5-1+7)/9=(4+7)/9=11/9=1.bar2`