16Hit1600
Advanced MathEasy–MediumNumerator after adding fractions with the same denominator

Advanced Math practice question

For x ≠ 0, the sum 2/x + 3/x is equal to k/x, where k is a constant. What is the value of k?

Answer: 5

Same denominator: add the numerators, 2 + 3 = 5, so k = 5.

Common wrong answers

If you answered 1
1 subtracts instead of adding.
If you answered 6
6 multiplies the numerators instead of adding.
If you answered 2.5
2.5 halves the sum, as if the denominators had also been added (2x).

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