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\(\frac{4}{5}\cdot\frac{3}{x}\cdot\frac{2}{11}=\frac{24}{165}\)
\(\frac{3}{x}\) \(=\frac{24}{165}:\frac{2}{11}:\frac{4}{5}\)
\(\frac{3}{x}\) \(=1\)
\(x\) \(=3\)
\(\frac{4}{3}:\frac{x}{5}=\frac{5}{13}\cdot\frac{4}{9}\)
\(\frac{4}{3}:\frac{x}{5}=\frac{20}{117}\)
\(\frac{x}{5}=\frac{4}{3}:\frac{20}{117}\)
\(\frac{x}{5}=\frac{39}{5}\)
\(x=39\)
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(1 + x) + (2 + x) + (3 + x) + (4 + x) + (5 + x) = 10.5
15 + 5.x = 50
5.x = 50 - 15
5.x = 35
x = 35 : 5
x = 7
dấu chấm là dấu nhân
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x + 5 - 10 = 100
x = 100 - 5 + 10
x = 105
câu 2 theo mk là sai đề
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\(\frac{5}{4}\times x=\frac{3}{8}+\frac{5}{12}\)
\(\Rightarrow\frac{5}{4}\times x=\frac{9}{24}+\frac{10}{24}\)
\(\Rightarrow\frac{5}{4}\times x=\frac{19}{24}\)
\(\Rightarrow x=\frac{19}{24}:\frac{5}{4}\)
\(\Rightarrow x=\frac{19}{24}\cdot\frac{4}{5}=\frac{19}{30}\)
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A) => X = ( 357 - 7 ) : 5
=> X = 350 : 5
=> X = 70
B)
=> ( x + 5 ) = ( 357 - 7 ) : 5
=> x + 5 = 350 : 5
=> x + 5 = 70
=> x = 70 - 5
=> x = 65
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a) \(\frac{3}{5}\times x=\frac{4}{7}\)
\(x=\frac{4}{7}:\frac{3}{5}\)
\(x=\frac{20}{21}\)
b) \(\frac{1}{8}:x=\frac{1}{5}\)
\(x=\frac{1}{8}:\frac{1}{5}\)
\(x=\frac{5}{8}\)
k nha
a)x=\(\frac{4}{7}:\frac{3}{5}\)
x=20/21
b) x=\(\frac{1}{8}:\frac{1}{5}\)
=>x=5/8
k to di mà
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\(X\times\frac{3}{5}+X\times\frac{2}{5}=\frac{12}{13}\)
\(X\times\left(\frac{3}{5}+\frac{2}{5}\right)=\frac{12}{13}\)
\(X\times1=\frac{12}{13}\)
\(X=\frac{12}{13}:1\)
\(X=\frac{12}{13}\)
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Sai đâu mà sai, xem mình giải nè
a) (x+3/5) x 4 =8/3 b) (5/8-x) :2/5 =3
x+3/5 =8/3:4 5/8-x =3.2/5
x+3/5 =2/3 5/8-x =6/5
x =2/3-3/5 x =5/8-6/5
x =1/15 x = -23/40
\(x \times 5+6246=80416\)
\(x \times 5=80416-6246=74170\)
`x=74170:5`
`x=14834`
\(5x+6246=80416\\ \Rightarrow5x=80416-6246\\ \Rightarrow5x=74170\\ \Rightarrow x=74170:5\\ \Rightarrow x=14834\)