write an equation solving In a diagram, ∠A and ∠B are vertical angles, and ∠B is a complementary angle with ∠C . If m∠A=22° , write an equation that you can use to solve for m∠C .

m∠A + m∠B = 180°

m∠A = 22°
m∠B = 180° - 22° = 158°
m∠C + m∠B = 90°
m∠C + 158° = 90°
m∠C = 90° - 158°
m∠C = -68°

Equation to solve for m∠C is:
m∠C = -68°