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26 August, 23:59

If 9a + 9b + 9c = 5, what is 72a + 72b + 72c

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Answers (2)
  1. 27 August, 00:13
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    40

    Step-by-step explanation:

    9a + 9b + 9c = 5

    We want 72a

    72a/9a = 8 so multiply the first equation by 8

    8 (9a + 9b + 9c) = 5*8

    72a + 72b + 72c = 40
  2. 27 August, 00:17
    0
    40

    Step-by-step explanation:

    Divide all three terms of 72a + 72b + 72c by 8. Result: 8 (9a + 9b + 9c).

    We are told that 9a + 9b + 9c = 5. Thus, 8 (9a + 9b + 9c) = 8 (5) = 40
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