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20 January, 17:45

What is the value of a in the equation 3 a plus b equals 54, when b equals 9?

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Answers (2)
  1. 20 January, 18:15
    0
    3a+b=54, b=9

    3a + 9 = 54

    3a = 54-9=45

    a = 45:3=15
  2. 20 January, 20:52
    0
    a = 15

    Step-by-step explanation:

    Given

    3a + b = 54 ← substitute b = 9

    3a + 9 = 54 (subtract 9 from both sides)

    3a = 45 (divide both sides by 3)

    a = 15
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