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21 January, 20:49

If a : b = 5 : 3, find 5a - 3b / 5a + 3b

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  1. 21 January, 20:59
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    Step-by-step explanation:

    Given

    a : b = 5 : 3

    or

    a = 5 and b = 3

    Now

    = 5a - 3b

    5a + 3b

    = 5 * 5 - 3 * 3

    5 * 5 + 3 * 3

    = 25 - 9

    25 + 9

    = 16 / 34

    Dividing both numerator and denominator by 2 we get

    = 8/17
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