Workkeys Math Practice Test

If you add 7 to a number and the result is 12, what is the number?

3 5 7 12

Correct Answer:

Explanation:

To find the correct number, you can represent the unknown number as a variable, often denoted as \( x \). The equation based on the problem statement is set up as follows: \[ x + 7 = 12 \] To isolate \( x \), you need to subtract 7 from both sides of the equation. This results in: \[ x = 12 - 7 \] Calculating the right side gives you: \[ x = 5 \] Thus, the unknown number is 5. This answer is correct because it satisfies the original condition of the problem: when you add 7 to 5, the result is 12, aligning perfectly with what is given in the question.

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