SOLUTION: in segment AB, M is the midpoint. If AM=3x+5 and MB=-2x-20 what is the measure of segment AB?

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Question 391520: in segment AB, M is the midpoint. If AM=3x+5 and MB=-2x-20 what is the measure of segment AB?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
There is no solution to this problem. MB = -2x - 20 means the length of segment MB is negative. (Incidentally using directed distances also fails here.)