Exercise algebra.manipulation.exponential.equation

Description
solve exponential equation algebraically

Derivation

3^(x-1) == 81

⇒ algebra.manipulation.exponents.factor-as-power

3^(x-1) == 3^4

⇒ algebra.manipulation.exponents.equation.same-base

x-1 == 4

⇒ algebra.equations.coverup.onevar.minus-left

x == 5