Question

How do you solve `\frac { 4} { 15} + \frac { 5} { 12}`?

Answer 1

`41/60`

Explanation:

The lowest common denominator is 60.
60 is the lowest number both 15 and 12 will go into

So `4/15 +5/12 = (4/15 xx 4/4) + (5/12 xx 5/5)`

= `16/60+25/60= 41/60`

If you cannot spot the lowest common denominator then.

So `4/15 +5/12 = (4/15 xx 12/12) + (5/12 xx 15/15)`

= `48/180+75/180=123/180`

Cancel/ divide numerator and denominator by 3 to give answer.