Answers

2016-01-26T01:07:57+05:30
find mid-point
(-5-1)/2 = a/3 ======> -3 = a/3 =====> a = -9
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no need to go further
problem solved
1 5 1
2016-01-26T17:58:16+05:30
I hope the image solves your problem
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