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

Toán Lớp 7: c, 4- (-0,125)^0 + 2^2 : 0.25 d, 4/7.12/19+3/7.12/19-1^2022

Toán Lớp 7: c, 4- (-0,125)^0 + 2^2 : 0.25
d, 4/7.12/19+3/7.12/19-1^2022

Comments ( 2 )

  1. Giải đáp:

     

    Lời giải và giải thích chi tiết:

     cho ctlhn nha

    toan-lop-7-c-4-0-125-0-2-2-0-25-d-4-7-12-19-3-7-12-19-1-2022

  2. c)4-(-0,125)^0 +2^2 :0,25

    =4-1+4:25/100

    =3+4:1/4

    =3+4.4

    =3+16=19

    d,4/7 . 12/19 +3/7 . 12/19 -1^2022

    =12/19 (4/7 +3/7 )-1

    =12/19 . 7/7-1

    =12/19 .1 -1

    =12/19 -1

    =12/19-19/19=(-7)/19

    -> Áp dụng : Đặt nhân tử chung

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