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 2 years ago
The sum of 2 numbers is 18. The difference between 3 times the smaller number and the larger number is 10. Define variables and formulate a system of equations from this situation. What is the larger number? work please? :D
 2 years ago
The sum of 2 numbers is 18. The difference between 3 times the smaller number and the larger number is 10. Define variables and formulate a system of equations from this situation. What is the larger number? work please? :D

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S
 2 years ago
Best ResponseYou've already chosen the best response.1x + y = 18 3x  y = 10 sum the two equations: 4x = 28 x = 7 now plug in x = 7 back into the two equations : 7 + y = 18 3(7)  y = 10 you get y = 11 So the smaller number is 7, larger number is 11
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