Let's denote the two numbers as \( x \) and \( y \).
From the problem, we have two conditions:
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The difference of the two numbers is equal to 4, which can be expressed as: \[ x - y = 4 \]
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The sum of three times one of the numbers and the other number is equal to 34. Assuming we take three times \( x \) and add \( y \), this can be expressed as: \[ 3x + y = 34 \]
So the system of equations that represents this situation is:
- \( x - y = 4 \)
- \( 3x + y = 34 \)
From the provided options, the correct choice is: \[ x - y = 4 \text{ and } 3x + y = 34 \]
(Note that it appears that there is a repetition in your options: "x−y=4 and 3x+y=34" appears twice in the choices.)