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Ace your tests.

Treat wrong answers right.

Four-choice math for standardized tests

Free prep explains the right answer.

If , what is the value of ?

  • A: 2
  • B: 6. Picked, wrong
  • C: 8
  • D: 10. Right

Free prep shows

Where 6 comes fromNot shown

Woozi shows where yours comes from.

B6

Where 6 comes from

  1. 13(x − 2) + 5 = 2x + 9
  2. 23x − 2 + 5 = 2x + 9
  3. 33x + 3 = 2x + 9
  4. 4x = 6

Multiplying only the x leaves −2, which leads to 6.

All three wrong choices

  • A2
  • B6
  • C8

One difference.

Free prepWoozi
The right answerYesYes
Where your pick comes fromNoYes