giải câu 1 hộ em ạ ( hơi dài ạ ) cho 5 sao ạ

Question

giải câu 1 hộ em ạ ( hơi dài ạ ) cho 5 sao ạ

giai-cau-1-ho-em-a-hoi-dai-a-cho-5-sao-a

in progress 0
Hưng Khoa 6 years 2020-11-07T04:27:15+00:00 1 Answers 81 views 0

Answers ( )

  1. Farah
    0
    2020-11-07T04:28:24+00:00
    Reply

    Bài 1:

    a) $\frac{5}{8}$ – $\frac{3}{8}$ : ($\frac{-3}{4}$) – $\frac{1}{4}$ · 0

    = $\frac{5}{8}$ – ($\frac{-1}{2}$) – 0

    = $\frac{5}{8}$ – ($\frac{-1}{2}$)

    = $\frac{9}{8}$

    b) 2,5 – ($\frac{-16}{2017}^{0}$) + ($\frac{-1}{3}^{2}$) : (-3)

     = 2,5 – ($\frac{-16}{2017}^{0}$) + ($\frac{-1}{27}$)

    = $\frac{3}{2}$ + ($\frac{-1}{27}$)

    = $\frac{79}{54}$ 

    c) ($\frac{2}{99}$ – $\frac{3}{7}$) : $\frac{4}{7}$ + $\frac{7}{4}$ · $\frac{97}{99}$

    = $\frac{-283}{693}$ :  $\frac{4}{7}$ + $\frac{679}{396}$

    = $\frac{-283}{396}$ + $\frac{679}{396}$

    = 1

    d) $\frac{2016}{2017}$ · (13-13·$\frac{2016}{2017}$) – $\frac{1}{2017}$ : $\frac{2017}{2016}$ 

    = $\frac{2016}{2017}$ · [13·(1-$\frac{2016}{2017}$)] – $\frac{1}{2017}$ · $\frac{2016}{2017}$

    = $\frac{2016}{2017}$ · (13·$\frac{1}{2017}$) – $\frac{1}{2017}$ · $\frac{2016}{2017}$

    = $\frac{2016}{2017}$ · $\frac{13}{2017}$ – $\frac{1}{2017}$ · $\frac{2016}{2017}$

    = 0

    Cho mình xin ctrlhn để có động lực ạ!

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )