Advanced Math practice question

Answer: 4

Multiplying powers of 2 adds the exponents: x + 3 = 7, so x = 4.

Common wrong answers

If you answered 10

10 is 7 + 3, adding instead of subtracting.

If you answered 21

21 is 7 × 3, multiplying the exponents.

If you answered 2.33

2.33 is 7/3, dividing the exponents instead of subtracting.

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