giúp mik với 4/9 * 5/9 + 2021/2022 * 10/9 – 2021/2022 * 5/9

0 bình luận về “giúp mik với 4/9 * 5/9 + 2021/2022 * 10/9 – 2021/2022 * 5/9”

1. `4/9 × 5/9 + 2021/2022 × 10/9 – 2021/2022 × 5/9`

   `= 4/9 × 5/9 + 2021/2022 × ( 10/9 – 5/9 )`

   `= 4/9 × 5/9 + 2021/2022 × 5/9`

   `= 5/9 × ( 4/9 + 2021/2022 )`

   `= 5/9 × 26277/16198`

   `= 43795/54594`

   `#dtkc`

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2. `4/9 × 5/9 + 2021/2022 × 10/9 – 2021/2022 × 5/9`

   `= 4/9 × 5/9 + 2021/2022 × (10/9 – 5/9)`

   `= 4/9 × 5/9 + 2021/2022 × 5/9`

   `= (4/9 + 2021/2022) × 5/9`

   `= 26277/18198 × 5/9`

   `= 131385/163782`

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