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14 September, 13:54

7/9*18/21=?

Solved and supporting work and answer in simpliest form

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  1. 14 September, 16:25
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    Answer: 2/3

    (7/9) (18/21)

    (7/9) (6/7)

    common factor is 3 between 18 and 21. 7 x 3 = 21 and 6 x 3 = 18

    7/9 6/7 multiply 7 x 9 = 63 and 6 x 7 = 42

    = 42/63

    = 2/3

    decimal: 0.666667
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