SOLUTION: M is the midpoint of segment PQ. Find PQ if PM = 5x+3 and MQ = 2x+12 I am not sure how to start this problem please help me? Also I am sorry if I am posting this in the wrong

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Question 669590: M is the midpoint of segment PQ. Find PQ if PM = 5x+3 and MQ = 2x+12
I am not sure how to start this problem please help me?
Also I am sorry if I am posting this in the wrong section I am not sure what this would go under and thank you for help in advanced!
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

M is the midpoint of segment PQ. 

PM = 5x+3 and MQ = 2x+12

Therefore...

 PM + MQ = PQ = 5x + 3 + 2x + 12 = 7x + 15