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Solving Linear Equations Flashcards

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

Read the first 7 Solving Linear Equations flashcards as text

  1. Solve for x: x + 13 = 5

    Answer: x = -8

    Subtract 13 from both sides: x = 5 - 13 = -8.

  2. Three electricians split a job bonus equally. If each receives $240, which equation finds the total bonus B?

    Answer: B/3 = 240

    Dividing the total by 3 gives each person's share: B/3 = 240.

  3. Solve for x: 8x - 5 = 6x + 9

    Answer: x = 7

    Subtract 6x: 2x - 5 = 9, add 5: 2x = 14, divide: x = 7.

  4. Solve for x: x/6 = 9

    Answer: x = 54

    Multiply both sides by 6: x = 9 × 6 = 54.

  5. A voltage reading is modeled by V = 12t + 4 where t is time in seconds. At what time t does V equal 52 volts?

    Answer: t = 4 seconds

    Set 12t + 4 = 52, subtract 4: 12t = 48, divide: t = 4 seconds.

  6. Solve for p: 2p + 14 = 0

    Answer: p = -7

    Subtract 14: 2p = -14, then divide by 2: p = -7.

  7. A 120-volt circuit has resistance R. Using V = IR with I = 15 amps, which equation correctly solves for R?

    Answer: R = 120/15 = 8 ohms

    Dividing both sides of V = IR by I gives R = V/I = 120/15 = 8 ohms.

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