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2 April, 07:58

If a + 7b + 4c = 2, what is 36c + 9a + 63b?

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Answers (2)
  1. 2 April, 08:16
    0
    18

    Step-by-step explanation:

    a + 7b + 4c = 2,

    Multiply this equation by 9

    9 (a + 7b + 4c) = 2*9

    9a + 63b + 36c = 18

    Rearrange the order

    36c + 9a + 63b = 18
  2. 2 April, 08:26
    0
    18

    Step-by-step explanation:

    36c+9a+63b = collecting 9:

    =9 * (4c+a+7b)

    so it is 4 times the given a+7b+4c which in the definition is equal to 2; so:

    =9 * (4c+a+7b) = 9 * 2=18
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