làm đc phần nào thì làm nhá

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làm đc phần nào thì làm nhá
lam-dc-phan-nao-thi-lam-nha

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Nem 3 years 2021-04-25T22:26:57+00:00 2 Answers 18 views 0

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  1. Eirian
    0
    2021-04-25T22:27:59+00:00
    Reply

    a) `5/-11 . 22`

    `= 110/-11`

    `=-10`

    b) `(-3/5)^2`

    `= (-3)^2/5^2`

    `= 9/25`

    c) `-4/9 . 3/-8`

    `= -12/-72`

    `=1/6`

    d) `(1-8). (-4/7)`

    `= -7 . (-4/7)`

    `= 4`

    e) `-5/8 . 16/25 -21/35`

    `= -2/5 – 21/35`

    `= -1`

    f) `-12/11 . 33/72 – 26/65`

    `= -1/2 – 26/65`

    `=-9/10`

    g) `8/15 . 3/64 – 13/25`

    `= 1/40-13/25`

    `=-99/200`

    h) `( 1- 5/1) (3/8 – 5^2/24)`

    `= -4 . (3/8 – 25/24)`

    `= -4. (-2/3)`

    `= 8/3`

  2. thanhha
    0
    2021-04-25T22:28:25+00:00
    Reply

    `Bài` `1:`

    `a,` `\frac{5}{-11}.22=“\frac{5.22}{-11}=“\frac{110}{-11}=-10`

    `b,` `(\frac{-3}{5})^2=` `\frac{-3}{5}“.` `\frac{-3}{5}=“\frac{(-3)(-3)}{5.5}=` `\frac{9}{25}`

    `c` `\frac{-4}{9}.“\frac{3}{-8}=“\frac{(-4).3}{9.(-8)}=“\frac{-12}{-72}=“\frac{12}{72}=“\frac{1}{6}`

    `d,` `(1-8)` `.` `\frac{-4}{7}=` `-7` `.` `\frac{-4}{7}` `=` `\frac{28}{7}=4`

    `e,f,g,h` `làm` `tương` `tự`

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