## Algebra 1: Common Core (15th Edition)

$a=20/3$
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 $a=20/3$.