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ASVAB · Algebra Basics and Equations

If 2(x + 3) = 16, what is the value of x?

Correct answer

5

  1. A 5
  2. B 8
  3. C 11
  4. D 2.5

Why this is the answer

First distribute or divide. Dividing both sides by 2: x + 3 = 8. Then subtract 3: x = 5. Alternatively, distribute first: 2x + 6 = 16, then 2x = 10, so x = 5. Either order works. Check: 2(5 + 3) = 2(8) = 16. ✓ Equations with parentheses can be solved by distributing the multiplier or by dividing both sides by it first; dividing first is often quicker when the right side is divisible. The value of x is 5.
Source: ASVAB MK, Equations with Parentheses

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