Answer:
hmmmm. probably 2? I think it's two
Answer:

Step-by-step explanation:
Using the rule of exponents
⇔
, then
=
= 
So the given angles are supplementary (add to 180). You take the two and add them. 21x+5+37x+1. This gets set to equal 180. 58x+6=180. Subtract 6 from both then divide by 58. You get x=3