Question

What is the degree of an angle that is 420 degrees less than four times its supplement

Answer 1

A supplement is an what you add to an angle to make it equal to 180 degrees.
So you set up your equation this way.
180 = (4x-420) + x, where x is your supplement

Answer 2

then what would I do

Answer 3

600 = 5x
x = 120, which is your supplement, so your original angle measure is 80

Answer 4

Do you get how i got that?

Answer 5

No I do not understand how you found 600 =5x

Answer 6

180= 4x - 420 +x
add 480 to both sides
180+420= 4x + x
600= 5x

Answer 7

add 420 to both sides***

Answer 8

ok let me go through the equation just to make sure

Answer 9

Okiedokie

Answer 10

why did you add x to (4x-420)?

Answer 11

(4x-420) represents your original angle, since your question said that your orginal angle was 420 less than 4 times your supplement, x being your supplement. Since a supplement means an angle that adds to 180 you had to add the original angle to the supplment to = 180

Answer 12

Ok thank you so much!

Answer 13

No probs

Answer 14

wait...

Answer 15

why would x=80 if the supplement is 120

Answer 16

wouldnt x=60

Answer 17

Oh wow, you caught my error. My bad dude, your right. Way to math

Answer 18

ok thank you