SOLUTION: THe sum of two numbers is 45. Three times the first number plus seven times the second is 115. Find the two numbers.

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Question 306221: THe sum of two numbers is 45. Three times the first number plus seven times the second is 115. Find the two numbers.
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Let A and B bet the numbers.
1.
2.
From eq. 1,


Substitute into eq. 2,




Then from eq. 1,



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