2.13 Exponential and logarithmic equations and inequalities

Solve $\left(\frac{1}{9}\right)^{x+5}=81$(19​)x+5=81

by first making all bases the same integer value.

Solve the equation $\left(\frac{1}{8}\right)^{x-3}=16^{4x-3}$(18​)x−3=164x−3.

Solve the equation $2^x\cdot2^{x+3}=32$2x·2x+3=32.