\(=2021\cdot2\cdot\left(1+\dfrac{1}{2}:\dfrac{3}{2}-\dfrac{4}{3}\right)=4042\cdot\left(1+\dfrac{1}{3}-\dfrac{4}{3}\right)=0\)
\(=2021\cdot2\cdot\left(1+\dfrac{1}{2}:\dfrac{3}{2}-\dfrac{4}{3}\right)=4042\cdot\left(1+\dfrac{1}{3}-\dfrac{4}{3}\right)=0\)
\(\dfrac{1}{2019-x}+\dfrac{1}{2020-x}+\dfrac{1}{2021-x}=\dfrac{13}{12}\)
Tìm x nha
tính nhanh\(\dfrac{2021}{2022}x\dfrac{202220222022}{202320232023}x\dfrac{20212021}{20232023}\)
\(\dfrac{1}{2022}\)+\(\dfrac{3}{2022}\)+\(\dfrac{5}{2022}\)+...+\(\dfrac{2021}{2022}\)+1=?
Giúp tớ bài này với nhé.
A= 1\(\dfrac{1}{2}\) \(\times\)1\(\dfrac{1}{3}\) \(\times\)1\(\dfrac{1}{4}\) \(\times\)1\(\dfrac{1}{5}\) \(\times\).... \(\times\)1\(\dfrac{1}{2020}\) \(\times\) 1\(\dfrac{1}{2021}\)
\(\dfrac{1}{2019}+\dfrac{1}{2020}+\dfrac{1}{2021}\)=?
Tính:
( 2019 x 2020 + 2021 + 2022 ) x ( 1 + 1/2 : 1 và 1/2 - 1 và 1/3
Đang cần rất gấp.
tìm x
\(\frac{x+1}{2019}+\frac{x+2}{2020}=\frac{x+3}{2021}+\frac{x+4}{2022}\)
Thực hiện phép tính-tính nhanh giá trị biểu thức
A=19\(\dfrac{1}{4}\) + \(\dfrac{1}{2}\)x 2\(\dfrac{1}{3}\)+5,75 - \(\dfrac{1}{6}\)+74
B=[(\(\dfrac{1}{3}+\dfrac{1}{4}\))] x \(\dfrac{12}{19}+\dfrac{12}{19}\)] : \(\dfrac{4}{5}-\dfrac{1}{4}+2012\)
C=\(\dfrac{232323}{353535}:\dfrac{76x47-28}{76x46+48}\)
Bài 7: (Đề 2) Tính nhanh
\(1\dfrac{1}{2}x1\dfrac{1}{3}x1\dfrac{1}{4}x...x1\dfrac{1}{999}\)