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26 May, 13:05

What do you add to 3 6/7 to make 5

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  1. 26 May, 13:20
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    x=8/7

    Step-by-step explanation:

    Let the unknown be x

    So 3 6/7 + x=5

    27/7 + x=5

    Lcm is 7

    27+7x/7=5

    Cross multiply

    27+7x=7*5

    27+7x=35

    Substrate 27 from both sides

    7x=8

    Make x the subject of formula by dividing both sides by 7

    x=8/7
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