Question

http://prntscr.com/i9c0um

Answer 1

opposite angles add up to 180

so (x + 20) + 3x = 180

solve for x first [there's another step after this so don't stop there]

Answer 2

x=40

Answer 3

good, now we also know that <A + <C = 180 using the same rule

so (2x + 38) + <C = 180

using the value of x we determined earlier (40) solve for <C

Answer 4

So basically? 2(40)+38+C=180

Answer 5

C=62?