\(\dfrac{2022\times2023-1}{2023\times2021+2022}\)

= \(\dfrac{\left(2021+1\right)\times2023-1}{2023\times2021+2022}\)

= \(\dfrac{2023\times2021+2023-1}{2023\times2021+2022}\)

= \(\dfrac{2023\times2021+2022}{2023\times2021+2022}\)

= 1

2023×2021+20222022×2023−1​

= (2021+1)×2023−12023×2021+20222023×2021+2022(2021+1)×2023−1​

= 2023×2021+2023−12023×2021+20222023×2021+20222023×2021+2023−1​

= 2023×2021+20222023×2021+20222023×2021+20222023×2021+2022​

= 1

36396

`2022 : 0,25  + 2022 : 0,1 -  2022 : 0,5 + 2022 : 1/6`

`=2022 xx 4 +2022 xx 10 - 2022 xx 2 + 2022 xx 6`

`= 2022 xx(4+10-2+6)`

`=2022 xx 18`

`=36396`

36396

\(2022\times2005-2000\times2022+15\times2022-20\times2021\)

\(=2022\times\left(2005-2000+15\right)-20\times2021\)

\(=2022\times20-20\times2021\)

\(=20\times\left(2022-2021\right)\)

\(=20\times1\)

\(=20\)

a, 2022 \(\times\) 2005 - 2000 \(\times\) 2022 + 15 \(\times\) 2022 - 20 \(\times\) 2021

= (2022  \(\times\) 2005 - 2000 \(\times\) 2022 + 15 \(\times\) 2022 )- 20 \(\times\) 2021

= 2022 \(\times\) (2005 - 2000 + 15) - 20  \(\times\) 2021

= 2022 \(\times\) (5 +15)  - 20 \(\times\) 2021

= 2022 \(\times\) 20 - 20 \(\times\) 2021

= 20 \(\times\) (2022 - 2021)

= 20 \(\times\) 1

= 20 

   \(\dfrac{2021}{2022}\) x \(\dfrac{2022020222022}{202320232023}\) x \(\dfrac{20212021}{20232023}\)

= \(\dfrac{2021}{2022}\) x \(\dfrac{2022}{2023}\) x \(\dfrac{2021}{2023}\)

= \(\dfrac{2021\times2021}{2023\times2023}\)

= \(\dfrac{4084441}{4092529}\)

help me !!!!!!!

\(=2021\cdot2\cdot\left(1+\dfrac{1}{2}:\dfrac{3}{2}-\dfrac{4}{3}\right)=4042\cdot\left(1+\dfrac{1}{3}-\dfrac{4}{3}\right)=0\)

Tính chậm đc ko :v

=-137496 :)

=2022.19731011. (-32-2. 2021)

=?

=?

=? :v

-13.21-13.80+13

=-13.(21-80+1)

=-13.100

=-1300

-1+2-3+4-5+6-...-2021+2022

=(-1+2)+(-3+4)+...+(-2021+2022)

=1+1+1+...+1 (1011 số hạng)
=1011

-13 . 21 - 13 . 80 + 13

13 ( -21 - 80 + 1 )

13 . ( -100 )

- 1300

\(-13\cdot21-13\cdot80+13=13\left(-21-80+1\right)=13\cdot\left(-100\right)=-1300\)

Bạn nên viết đề bằng công thức toán (biểu tượng $\sum$ góc trái khung soạn thảo) để mọi người hiểu để của bạn hơn nhé.