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6 September, 14:49

What is the value of a in the equation 5a - 10b = 45, when b = 3? 3 15 21 39

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Answers (2)
  1. 6 September, 15:00
    0
    The answer should be the second answer, 15
  2. 6 September, 15:15
    0
    Substitute B into the equation

    5a - 10 (3) = 45

    5a - 30 = 45

    +30 + 30

    5a = 75

    /5 / 5

    a = 15
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