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4 December, 11:05

Evaluate the expression 8 16/21 + 8 11/14 - 9 1/7

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  1. 4 December, 11:58
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    8 17/42.

    Step-by-step explanation:

    WE convert each fraction 's denominator to the LCD (lowest common denominator. LCD of 7 14 and 21 = 42.

    So we have 8 32/42 + 8 33/42 - 9 6/42

    8 + 8 - 9 = 7.

    32/42 + 33/42 - 6/42

    = 59/42 = 1 17/42.

    7 + 1 17/42

    = 8 17/42.
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