Question

Math honestly shouldn't exist-

Answer 1

This isn't really that hard... ∠A = 166°

Explanation:

Because ∠A and ∠B are corresponding angles of a set of parallel lines, that means they are equal, so you can use this equation to solve for x:
`7x+40=3x+112` ⇒
`4x=72` ⇒
`x=18`. To find ∠A, just substitute x for 18 and you'll get that ∠A equals 7 * 18 + 40 = 126 + 40 = 166°.