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Linear Equations in One Variable Flashcards

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

Read the first 7 Linear Equations in One Variable flashcards as text

  1. If 2(3 − x) = x − 9, what is x?

    Answer: 5

    6 − 2x = x − 9 → 15 = 3x → x = 5.

  2. A recipe requires flour and sugar in a ratio of 5:2. If a baker uses f cups of flour and the total of both ingredients is 28 cups, how many cups of flour are used?

    Answer: 20

    Flour is 5/7 of 28 = 20.

  3. Solve for x: x/5 + x/10 = 9

    Answer: 30

    2x/10 + x/10 = 9 → 3x/10 = 9 → x = 30.

  4. A basketball player's free-throw percentage improves by 4 points each week. After w weeks his percentage is 68. It started at 52. How many weeks have passed?

    Answer: 4

    52 + 4w = 68 → 4w = 16 → w = 4.

  5. If 5x + 3 = 4(x + 2), what is the value of x?

    Answer: 5

    5x + 3 = 4x + 8 → x = 5.

  6. Solve for n: (n − 4)/3 + 2 = 5

    Answer: 13

    (n − 4)/3 = 3 → n − 4 = 9 → n = 13.

  7. Two workers together earn $540 for a job. Worker A earns twice as much as Worker B. How much does Worker B earn?

    Answer: $180

    B + 2B = 540 → 3B = 540 → B = 180.