16Hit1600
AlgebraEasySecond number from a sum

Algebra practice question

Two numbers add up to 9, and one of them is 4. What is the other number?

Answer: 5

4 + n = 9, so n = 5.

Common wrong answers

If you answered 13
13 adds 4 and 9.
If you answered 36
36 multiplies them.
If you answered 2.25
2.25 divides 9 by 4.

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