Simplify  $6^7\cdot6^8$  using the properties of exponents.

Simplify using the properties of exponents: $3^1\cdot3^8$  

Simplify using the properties of exponents: $2^1\cdot2^7$  

 $4^5\cdot4^2$  Simplify using the properties of exponents

Simplify using the properties of exponents: $\frac{7^8}{7^2}$  

Simplify using the properties of exponents: $\frac{3^{12}}{3^6}$  

Simplify using the properties of exponents: $2^{-5}\cdot2^3$  

Simplify using the properties of exponents:  $\frac{3^6}{3^{-2}}$  

Simplify using the properties of exponents: $2^{-5}\cdot2^{-3}$  

 $\frac{2^{-9}}{2^{-3}}$  

Simplify using the properties of exponents