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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: Tính hợp lý: 3121-(121+500) 3mũ2+3mũ2022 : 3mũ2021

Toán Lớp 6: Tính hợp lý:
3121-(121+500)
3mũ2+3mũ2022 : 3mũ2021

Comments ( 2 )

  1. $=3121-(121+500)^{}$ $\\$ $=3121-121-500^{}$ $\\$ $=3000-500=2500^{}$
    $3^{2}$ $+3^{2022}$ $:3^{2021}$ $\\$ $=3^{2}$ $+3^{2022-2021}$ $\\ $ $=9+3^{}$ $\\$ $=12^{}$

  2. 3121-(121+500)
    =3121-621
    =2500
    $3^{2}+$ $3^{2022 }:$ $3^{2021}$
    $=3^{2}+$ $3^{1}$
    =9+3
    =12
     

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222-9+11+12:2*14+14 = ? ( )

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