|-3+x|=|-24|
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![](https://rs.olm.vn/images/avt/0.png?1311)
Cái này bạn viết sai đề bài r, sau viết dấu cho nghiêm túc nhé. Đáp án C
![](https://rs.olm.vn/images/avt/0.png?1311)
* 24 x 5 + 24 x 3 + 24 x 2
= 24 x (5 + 3 + 2)
= 24 x 10
= 240
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{24}{x}:\dfrac{8}{3}=\dfrac{3}{5}\)
\(\dfrac{24}{x}=\dfrac{3}{5}.\dfrac{8}{3}\)
\(\dfrac{24}{x}=\dfrac{8}{5}\)
\(\dfrac{24}{x}=\dfrac{24}{15}\)
=>x=5
Vậy x=5
\(x+3\dfrac{1}{2}+x=24\dfrac{1}{4}\)
\(\left(x+x\right)+3\dfrac{1}{2}=24\dfrac{1}{4}\)
\(x.2+\dfrac{7}{2}=\dfrac{97}{4}\)
\(x.2=\dfrac{97}{4}-\dfrac{7}{2}\)
\(x.2=\dfrac{97}{4}-\dfrac{14}{4}\)
\(x.2=\dfrac{83}{4}\)
\(x=\dfrac{83}{4}:2\)
\(x=\dfrac{83}{4}.\dfrac{1}{2}\)
\(x=\dfrac{83}{8}\)
\(x=10\dfrac{3}{8}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(\frac{24}{x}:\frac{8}{3}=\frac{3}{5}\) \(\frac{24}{x}=\frac{3}{5}.\frac{8}{3}\) \(\frac{24}{x}=\frac{8}{5}\) \(x=24.5:8\) \(x=15\)
b) Đề bài sai rồi
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 24 : 6 : 2 = 4 : 2 = 2 => Đ
b) 24 : 6 : 2 = 24 : 3 = 8 => S
c) 18 : 3 x 2 = 18 : 6 = 3 => S
d) 18 : 3 x 2 = 6 x 2 = 12 => Đ
![](https://rs.olm.vn/images/avt/0.png?1311)
`#3107.101107`
\(48\div24-x=1\\ \Rightarrow2-x=1\\ \Rightarrow x=2-1\\ \Rightarrow x=1\)
Vậy, `x = 1`
____
\(124-2\times\left(x+3\right)=24\\ \Rightarrow2\left(x+3\right)=124-24\\ \Rightarrow2\left(x+3\right)=100\\ \Rightarrow x+3=100\div2\\ \Rightarrow x+3=50\\ \Rightarrow x=50-3\\ \Rightarrow x=47\)
Vậy, `x = 47.`
1) 48 : 24 - x = 1 2) 123 - 2 x (x+3) = 24
2-x=1 2 x (x+3) = 123 - 24
x= 2-1 2 x (x+3) = 99
x= 1 x+3 = 99 : 2
x+3 = \(\dfrac{99}{2}\)
x = \(\dfrac{99}{2}\) -3
x = \(\dfrac{93}{2}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a)x=\dfrac{1}{4}+\dfrac{5}{13}=\dfrac{33}{52}.\\ b)\dfrac{x}{3}=\dfrac{2}{3}+\dfrac{-1}{7}.\\ \Leftrightarrow\dfrac{x}{3}=\dfrac{11}{21}.\\ \Leftrightarrow\dfrac{7x}{21}=\dfrac{11}{21}.\\ \Rightarrow7x=11.\\ \Leftrightarrow x=\dfrac{11}{7}.\\ c)\dfrac{x}{3}=\dfrac{16}{24}+\dfrac{24}{36}=\dfrac{2}{3}+\dfrac{2}{3}=\dfrac{4}{3}.\\ \Rightarrow x=4.\\ d)\dfrac{x}{15}=\dfrac{1}{5}+\dfrac{2}{3}=\dfrac{13}{15}.\\ \Rightarrow x=13.\)
Trả lời:
|-3 + x| = |-24|
=> |-3 + x| = 24
=> -3 + x = 24 hoặc -3 + x = -24
+) -3 + x = 24
=> x = 27
+) -3 + x = -24
=> x = -21
Vậy x = 27; x = -21
ta có
\(\left|-3+x\right|=\left|-24\right|\Leftrightarrow\left|-3+x\right|=24\)
\(\Leftrightarrow\orbr{\begin{cases}-3+x=24\\-3+x=-24\end{cases}\Leftrightarrow\orbr{\begin{cases}x=27\\x=-21\end{cases}}}\)