Find x and y. give reasons to justify your solutions. plz will give you brainy award.

Well the total is 180 degrees

Add everything together which equals 180, x+27+3y+8x+18=180

Therefore combine like terms, 9x+3y+45=180

Subtract 45 from both sides, 9x+3y=135

27 and 3y combined make a right angle, so 90-27=63

63 divided by 3 is 21

y=21

Therefore all that's left is x

Subtract 63 cause we found y

You will get 72 all together,

Divide by 9, you will get 8

x=8

y=21

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!