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6 February, 18:52

Rob's tablet is fully charged. He uses 1/12 of the charge playing games, 5/12 of the charge reading and 3/12 completing homework. What fraction of the charge remains on Rob's tablet

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  1. 6 February, 19:18
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    All of the number already have the same denominator, which is 12 so you can just add them.

    (1+5+3) / 12=9/12

    and subtract then from 1 = 12/12

    (12-9) / 12=3/12
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