How do you simplify $\frac { 4} { 5} - \frac { 8} { 9} + \frac { 2} { 3} - \frac { 2} { 5}$ ?

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Answer 1 · 2018-04-14T09:41:17

Common Denominator

You must find a common denominator since you cannot add without a common denominator, There is no multiplication so you have to add/subtract.

$4/5 - 3/9 + 2/3 - 2/5$

The common denominator could be 45 so

$36/45 - 15/45 + 30/45 - 18/45$

This equation is then equal to $33/45$

How do you simplify \frac { 4} { 5} - \frac { 8} { 9} + \frac { 2} { 3} - \frac { 2} { 5}\frac { 4} { 5} - \frac { 8} { 9} + \frac { 2} { 3} - \frac { 2} { 5}?