What are 1 of the 4 tips to make a fraction simpler?

Plz which expression is equivalent to the expression below?

In a certain pentagon, the interior angles are a, b,c, d,e where a, b,c, d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

Combine like terms to make a simpler expression 3z+z