`x+1/6=2/3`
`=>x=2/3-1/6`
`=>x= 4/6-1/6`
`=>x=3/6`
`=>x=1/2`
`------`
`x-1/2=1 3/4 : 4 1/5`
`=>x-1/2=7/4 xx 5/21`
`=>x-1/2=5/12`
`=>x= 5/12+1/2`
`=>x=5/12 + 6/12`
`=>x=11/12`
\(x+\dfrac{1}{6}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}-\dfrac{1}{6}\)
\(x=\dfrac{4}{6}-\dfrac{1}{6}\)
\(x=\dfrac{1}{2}\)
Vậy \(x=\dfrac{1}{2}\)
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\(x-\dfrac{1}{2}=1\dfrac{3}{4}:4\dfrac{1}{5}\)
\(x-\dfrac{1}{2}=\dfrac{7}{4}:\dfrac{21}{5}\)
\(x-\dfrac{1}{2}=\dfrac{7}{4}.\dfrac{5}{21}\)
\(x-\dfrac{1}{2}=\dfrac{5}{12}\)
\(x=\dfrac{5}{12}+\dfrac{1}{2}\)
\(x=\dfrac{5}{12}+\dfrac{6}{12}\)
\(x=\dfrac{11}{12}\)
Vậy \(x=\dfrac{11}{12}\)
\(x+\dfrac{1}{6}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}-\dfrac{1}{6}=\dfrac{4}{6}-\dfrac{1}{6}\)
\(x=\dfrac{3}{6}=2\)
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\(x-\dfrac{1}{2}=1\dfrac{3}{4}:4\dfrac{1}{5}\)
\(x-\dfrac{1}{2}=\dfrac{7}{4}:\dfrac{21}{5}=\dfrac{7}{4}\cdot\dfrac{5}{21}\)
\(x-\dfrac{1}{2}=\dfrac{5}{12}\)
\(x=\dfrac{5}{12}+\dfrac{1}{2}=\dfrac{5}{12}+\dfrac{6}{12}\)
\(x=\dfrac{11}{12}\)
