SOLUTION: If the number of degrees in the measure of one angle of a triangle is represented by 4x and the measure of a second angle is represented by y, what expression would represent the m

Question 227616: If the number of degrees in the measure of one angle of a triangle is represented by 4x and the measure of a second angle is represented by y, what expression would represent the measure of the third angle?
My answer
1st angle = 4x
2nd angle = y
I�ll let x represent the 3rd angle

4x + (y + x) = 180

4x + y + x = 180 (-4x) + y I added 4x to both sides
+4x +4x
8x + y + x=180 + y I added -y to both sides
-y -y
8x + x = 180 I added 'x' to 8x
9x = 180 I divided both sides by 9
9 9
x=20

Check
4(20) + y + 20= 180

�y� must represent 60
Am I right?
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
first angle = 4x
second angle = y
third angle = z

4x+y+z=180 ---> z=180-(4x+y) --> z=180-4x-y

Answer: third angle is 180-4x-y

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