SOLUTION: If angle r and s are supplemental angles and r = 50 and s = 2x + 30, what is the value of x?

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Question 466034: If angle r and s are supplemental angles and r = 50 and s = 2x + 30, what is the value of x?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
s is supplementary to r, meaning that r+s = 180, s = 130. This is equal to 2x+30 so we set up an equation

2x+30 = 130

2x = 100

x = 50