\(\frac{2023}{2024}\cdot\frac34+\frac{2023}{2024}\cdot\frac56-\frac{2023}{2024}\cdot\frac{19}{12}\)
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2023×6+7×2023−2023
=2023×6+7×2023−2023x1
=2023×(6+7−1)
=2023×12
=24276
2030 × 4 +2023 × 2 + 3 × 2023
=8120 + 4046 + 6069
=18235
= 4x2023+2023x2+2023 x1 + 3x2023
=2023x (4+2+3+1)
= 2023 x 10
= 20230
cảm ơn bạn đã đọc!
Tính
C. \(\left(6^{2023}-6^{2023}\right):6^{2021}\)
\(=6^{2023}:6^{2021}-6^{2023}:6^{2021}\)
\(=6^2-6^2\)
\(=36-36\)
\(=0\)
C = (62023 - 62023): 62021
C = 0: 62021
C = 0
\(\dfrac{1}{a}+\dfrac{1}{b}+\dfrac{1}{c}=\dfrac{1}{2023}=\dfrac{1}{a+b+c}\)
\(\dfrac{a+b}{ab}+\dfrac{a+b}{c\left(a+b+c\right)}=0\)
\(\left(a+b\right)\left(\dfrac{1}{ab}+\dfrac{1}{c\left(a+b+c\right)}\right)=0\)
\(\left(a+b\right)\left[\dfrac{ab+bc+ca+c^2}{abc\left(a+b+c\right)}\right]=0\)
\(\left(a+b\right)\left(b+c\right)\left(c+a\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}a=-b\\b=-c\\c=-a\end{matrix}\right.\)
Đến đây bạn thay vào nữa là được nhé
\(\text{ 2023 x 10 - 2023 x 8 - 2023}\)
\(\text{= 2023 x (10-8-1)}\)
\(\text{= 2023 x 1}\)
\(\text{= 2028}\)
2023 \(\times\) 10 - 2023 \(\times\) 8 - 2023
= 2023 \(\times\) 10 - 2023 \(\times\) 8 - 2023 \(\times\) 1
= 2023 \(\times\) (10 - 8 - 1)
= 2023 x 1
= 2023
\(\dfrac{x-2023}{6}+\dfrac{x-2023}{10}+\dfrac{x-2023}{15}+\dfrac{x-2023}{21}=\dfrac{8}{21}\)
\(\left(x-2023\right)\left(\dfrac{1}{6}+\dfrac{1}{10}+\dfrac{1}{15}+\dfrac{1}{21}\right)=\dfrac{8}{21}\)
\(\left(x-2023\right).\dfrac{8}{21}=\dfrac{8}{21}\)
\(x-2023=1\)
\(x=2024\)
Vậy..............
\(...\Rightarrow\left(x-2023\right)\left(\dfrac{1}{6}+\dfrac{1}{10}+\dfrac{1}{15}+\dfrac{1}{21}\right)=\dfrac{8}{21}\)
\(\Rightarrow\left(x-2023\right)\left(\dfrac{35+21+14+1}{210}\right)=\dfrac{8}{21}\)
\(\Rightarrow\left(x-2023\right).\dfrac{71}{210}=\dfrac{8}{21}\)
\(\Rightarrow\left(x-2023\right).\dfrac{71}{210}=\dfrac{8}{21}.\dfrac{210}{71}=\dfrac{80}{71}\)
\(\Rightarrow x-2023=\dfrac{80}{71}\Rightarrow x=\dfrac{80}{71}+2023=\dfrac{143713}{71}\)
\(2023\times28+2023\times34-2023\times52\)
\(=2023\times\left(28+34-52\right)\)
\(=2023\times10\)
\(=20230\)
`# \text {DNamNgV}`
`2023 \times 28 + 2023 \times 34 - 2023 \times 52`
`= 2023 \times (28 + 34 - 52)`
`= 2023 \times 10 `
`=20230`
\(\frac{2023}{2024}\).\(\frac34\) + \(\frac{2023}{2024}\).\(\frac56\) - \(\frac{2023}{2024}\).\(\frac{19}{12}\)
= \(\frac{2023}{2024}\).(\(\frac34+\frac56\) - \(\frac{19}{12}\))
= \(\frac{2023}{2024}\).(\(\frac{9}{12}\) + \(\frac{10}{12}\) - \(\frac{19}{12}\))
= \(\frac{2023}{2024}\).(\(\frac{19}{12}\) - \(\frac{19}{12}\))
= \(\frac{2023}{2024}\).0
= 0