SOLUTION: Find m∠A if ∠A is supplementary to ∠B, ∠B is supplementary to ∠C, m∠B = 12x + 8, and m∠C = 8x - 8.

Algebra ->  Angles -> SOLUTION: Find m∠A if ∠A is supplementary to ∠B, ∠B is supplementary to ∠C, m∠B = 12x + 8, and m∠C = 8x - 8.      Log On

From the condition,

(12x + 8) + (8x-8) = 180.


Solve for x (which is easy).


Then use the fact that  m∠A = m∠C,  so  m∠A = 8x-8.