16Hit1600
AlgebraEasy–MediumEquation with a decimal coefficient

Algebra practice question

If 0.5x + 7 = 12, what is the value of x?

  1. A. 10Correct
  2. B. 2.5
  3. C. 38
  4. D. 5

Answer: A. 10

0.5x = 5, so x = 10.

Why the other answers are wrong

B. 2.5
2.5 multiplies 5 by 0.5 instead of dividing.
C. 38
38 adds 7 instead of subtracting, then doubles.
D. 5
5 stops at 0.5x = 5.

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