Simplify the following: (y^8*y^-5)/y^-7 What is the value of the exponent in the simplified answer?

\(\frac{y^8\cdot y^{-5}}{y^{-7}}=\frac{y^{8+(-5)}}{y^{-7}}=\frac{y^3}{y^{-7}}=y^{3-(-7)}=y^{10}\)