SOLUTION: What is the value of x if (2x+10)° is supplementary to (2x+30)°?

Algebra ->  Angles -> SOLUTION: What is the value of x if (2x+10)° is supplementary to (2x+30)°?       Log On


   

Question 872400: What is the value of x if (2x+10)° is supplementary to (2x+30)°?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
SInce they're supplementary,
2x%2B10%2B2x%2B30=180
4x=140
x=35
So then,
2x%2B10=2%2835%29%2B10=80
2x%2B30=2%2835%29%2B30=100