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Let X be one number and Y be the second number So X = 3Y and X + Y = 18 To solve, substitute the value of X from the first equation into the second equation. 3Y + Y = 18 4Y = 18 Y = 4.5 So X = 3*(4.5) = 13.5

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Q: One number is 3 times a second number The larger number increased by the smaller is 18 What are the numbers?
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