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\(\frac{30}{13}=\frac{26}{13}+\frac{4}{13}=2+\frac{1}{\frac{13}{4}}=2+\frac{1}{3+\frac{1}{4}}\)
a =2 ; b =3 ; c =4
Số abc = 234
30 / 13 = 26/13+4/13 = 2+ 1 / 13/4 = 2 + 1 / 3 + 1/4
suy ra a = 2 b = 3 c = 4
abc = 234
\(\frac{30}{13}=2+\frac{1}{\frac{13}{4}}=2+\frac{1}{3+\frac{1}{4}}\Rightarrow a=2;b=3;c=4\)
1,\(a,\frac{7}{12}+\frac{13}{32}\)
\(=\frac{56}{96}+\frac{39}{96}\)
\(=\frac{95}{96}\)
\(b,\frac{-18}{24}+\frac{25}{30}\)
\(=\frac{-3}{4}+\frac{5}{6}\)
\(=\frac{-18}{24}+\frac{20}{24}=\frac{2}{24}=\frac{1}{12}\)
2,\(a,\frac{2}{5}+\frac{-3}{7}=\frac{x}{70}\)
\(=>\frac{28}{70}-\frac{30}{70}=\frac{x}{70}\)
\(=>-\frac{2}{70}=\frac{x}{70}\)
\(=>x=-2\)
\(b,\frac{5}{6}+\frac{-19}{30}=\frac{1}{x}\)
\(=>\frac{25}{30}-\frac{19}{30}=\frac{1}{x}\)
\(=>\frac{6}{30}=\frac{1}{x}\)
\(=>\frac{1}{5}=\frac{1}{x}\)
\(=>x=5\)
1.
a) \(\frac{7}{12}+\frac{13}{32}=\frac{56}{96}+\frac{39}{96}=\frac{95}{96}\)
b) \(\frac{-18}{24}+\frac{25}{30}=\frac{-18}{24}+\frac{20}{24}=\frac{2}{24}=\frac{1}{12}\)
Ta có :
\(\frac{30}{43}=\frac{1}{\frac{43}{30}}=\frac{1}{1+\frac{13}{30}}=\frac{1}{1+\frac{1}{\frac{30}{13}}}=\frac{1}{1+\frac{1}{2+\frac{4}{13}}}=\frac{1}{1+\frac{1}{2+\frac{1}{\frac{13}{4}}}}=\frac{1}{1+\frac{1}{2+\frac{1}{3+\frac{1}{4}}}}\)
Vậy \(a=1;b=2;c=3;d=4\)
Ta có: \(\frac{30}{43}=\frac{1}{\frac{43}{30}}=\frac{1}{1+\frac{13}{30}}=\frac{1}{1+\frac{1}{2+\frac{4}{13}}}=\frac{1}{1+\frac{1}{2+\frac{1}{3+\frac{1}{4}}}}\)
\(\Rightarrow\)a = 1 ; b = 2 ; c = 3 ; d = 4
Vậy:
a = 1 ; b = 2 ; c = 3 ; d = 4