SOLUTION: Find the measure of BC given that AC=6x+8, AB=2x+1, and BC=3x+9

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Question 1164144: Find the measure of BC given that AC=6x+8, AB=2x+1, and BC=3x+9
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Segment Addition Postulate?
AB+BC=AC

2x%2B1%2B3x%2B9=6x%2B8
-
5x%2B10=6x%2B8
2=x
So you find BC.