Question 178587
To add fraction, you need a common denominator. 
The least common denominator of 5 and 15 is 15. 
Multiply the first fraction by (3/3) to get a denominator of 15.
{{{4/5+8/15=(4/5)(3/3)+8/15}}}
{{{4/5+8/15=(12/15)+8/15}}}
{{{4/5+8/15=(12+8)/15}}}
{{{4/5+8/15=20/15=highlight(4/3)}}}