Exercise algebra.manipulation.exponential.equation

Description
solve exponential equation algebraically

Derivation

9 == 2^x-7

⇒ algebra.equations.coverup.minus-left

16 == 2^x

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

2^4 == 2^x

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

4 == x

⇒ algebra.equations.linear.flip

x == 4