SOLUTION: Eight times a number plus five times another number is -13. The sum of the two numbers is 1. What are the numbers?

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Question 1169120: Eight times a number plus five times another number is -13. The sum of the two numbers is 1. What are the numbers?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%288x%2B5y=-13%2Cx%2By=1%29

If choosing substitution then 8x%2B5%281-x%29=-13,...