Answer
$a=20/3$
Work Step by Step
We start by creating a common denominator for all of the fractions:
$\frac{3a}{60}+\frac{16}{60}=\frac{36}{60}$
We now can combine the denominators on the same side of the equation:
$\frac{3a+16}{60}=\frac{36}{60}$
We then multiply both sides by 60 to find:
$3a+16=36$.
We now subtract 16 on both sides and divide by 3 to find that $a=20/3$.
