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Elementary Algebra Flashcards

7 cards from real NCDAP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Elementary Algebra flashcards as text

  1. If 3x - 7 = 14, what is the value of x?

    Answer: 7

    Adding 7 to both sides gives 3x = 21, then dividing by 3 gives x = 7.

  2. Which expression is equivalent to 4(2x - 3) + 5?

    Answer: 8x - 7

    Distributing gives 8x - 12, then adding 5 gives 8x - 7.

  3. A number increased by 12 equals 31. What is the number?

    Answer: 19

    Setting up n + 12 = 31 and subtracting 12 from both sides gives n = 19.

  4. What is the slope of the line passing through (2, 5) and (6, 13)?

    Answer: 2

    Slope = (13 - 5) / (6 - 2) = 8 / 4 = 2.

  5. Simplify: 5x² - 3x + 2x² + 7x

    Answer: 7x² + 4x

    Combining like terms: (5x² + 2x²) + (-3x + 7x) = 7x² + 4x.

  6. If y = 2x + 1 and x = -3, what is y?

    Answer: -5

    Substituting x = -3: y = 2(-3) + 1 = -6 + 1 = -5.

  7. Which value of x satisfies 2(x + 4) = 3x - 1?

    Answer: 9

    Expanding gives 2x + 8 = 3x - 1, so 9 = x.

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Sources & references

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  1. wordpress.nccommunitycolleges.edu — Retake policy, score validity, passing score, eligibility · verified Oct 2026
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