SOLUTION: Seven times a number plus three times another number equals negative one. The sum of the two numbers is negative three. What are the numbers?

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Question 832634: Seven times a number plus three times another number equals negative one. The sum of the two numbers is negative three. What are the numbers?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.7A%2B3B=-1
2.A%2BB=-3
Multiplying eq. 2 by 3 and subtract from eq. 1,
7A%2B3B-3A-3B=-1%2B9
4A=8
A=2
Then use either equation to solve for B.
2%2BB=-3
B=-5