Làm theo cách của Trắng nha :
5 - ( a/b + 1/2 ) = 7/3
=> 5 - a/b - 1/2 = 7/3
=> 10/2 - a/b - 1/2 = 7/3
=> 9/2 - a/b = 7/3
=> a/b = 9/2 - 7/3
=> a/b = 27/6 - 14/6
=> a/b = 13/6
\(5-\left(\frac{a}{b}+\frac{1}{2}\right)=\frac{7}{3}\)
\(5-\frac{1}{2}-\frac{a}{b}=\frac{7}{3}\)
\(\frac{9}{2}-\frac{a}{b}=\frac{7}{3}\)
\(\frac{a}{b}=\frac{9}{2}-\frac{7}{3}\)
\(\frac{a}{b}=\frac{13}{6}\)
Trả lời :
\(5-\left(\frac{a}{b}+\frac{1}{2}\right)=\frac{7}{3}\)
\(\Leftrightarrow\frac{a}{b}+\frac{1}{2}=\frac{8}{3}\)
\(\Leftrightarrow\frac{a}{b}=\frac{13}{6}\)
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