Whats 5y+3y-7

Question

Its about expresion

Answer 1

I assume the instructions are to simplify the expression.

There are three terms in this expression (terms are separated by + or -). There are two variable terms (those containing variables) and one constant term (those without variables, simply integers. 

We cannot combine unlike terms, because we don't know the specific value of the variable, but we can combine variable terms with variable terms, and constant terms with constant terms.

5y and 3y are like terms, so they can be combined: 5y + 3y adds to 8y

8y - 7

We have to stop here because there are no more like terms to combine, so this is fully simplified.