please help me solve this question i want to know how to do it, not just the answer.

m∠WYX=(4x−8)° and m∠WYZ=10x°. If ∠WYX and ∠WYZ are complementary, what is the measure of each angle?

(4x-8) + 10 x = 90

14 x = 98
x = 7
Now do it.