4x15x9x24 ———————— 3x12x8x5

0 bình luận về “4x15x9x24 ———————— 3x12x8x5”

1. $\dfrac{4 × 15 × 9 × 24}{3 × 12 × 8 × 5}$

   `= `$\dfrac{2 × 2 × 3 × 5 × 3 × 3 × 2 × 2 × 2 × 3}{3 × 2 × 2 × 3 × 2 × 2 × 2 × 5}$

   `= `$\dfrac{3 × 3}{1}$

   `= 9.`

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2. $\dfrac{4 × 15 × 9 × 24}{3 × 12 × 8 × 5}$

   `⇔` $\dfrac{4 × 5 × 3 × 3 × 3 × 8 × 3}{3 × 4 × 3 × 8 × 5}$

   `⇔` `3 × 3`

   `= 9`

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