SOLUTION: Find an angle that is 30 degrees less than twice its supplement

Algebra ->  Angles -> SOLUTION: Find an angle that is 30 degrees less than twice its supplement       Log On


   

Question 942706: Find an angle that is 30 degrees less than twice its supplement
Found 2 solutions by TimothyLamb, MathLover1:
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
x = angle measure in degrees
---
2(180 - x) - 30 = x
360 - 2x - 30 = x
3x = 330
x = 110
---
Free algebra tutoring live chat:
https://sooeet.com/chat.php?gn=algebra
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations with quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
---

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
supplementary angles add up to 180
if angle x that is 30 degrees less than twice its supplement, then we have

x+=+2%28180-x%29-30
solve for x:
x+=+2%2A180-2x+-30%0D%0A%7B%7B%7Bx+=+360+-+2x+-30
x+=+330+-2x
3x+=+330
x+=+110 degrees (angle #1)
The supplement would be %28180-x%29 or %28180-110%29=70.... Angle #2 is 70 degrees.