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

Question 872400: What is the value of x if (2x+10)� is supplementary to (2x+30)�?

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
SInce they're supplementary,

So then,

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