4/15×9/16×15;2/5×25/29+3/5×25/29

4/15×9/16×15;2/5×25/29+3/5×25/29

2 bình luận về “4/15×9/16×15;2/5×25/29+3/5×25/29”

  1. a, 4/15×9/16×15
    = 4/15×15/1×9/16
    = 4/1×9/16
    = 1×9/4
    =9/4
    b, 2/5×25/29+3/5×25/29
    = 25/29×(2/5+3/5)
    = 25/29×1
    = 25/29
    $\color{red}{\text{@Hy~Hoctotnha}}$

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