f) \(3\dfrac{7}{8}\times x-2\dfrac{3}{4}\times x=\dfrac{10}{8}-\dfrac{1}{6}\)
\(x\times\left(3\dfrac{7}{8}-2\dfrac{3}{4}\right)=\dfrac{13}{12}\)
\(x\times\left(\dfrac{31}{8}+\dfrac{11}{4}\right)=\dfrac{13}{12}\)
\(x\times\dfrac{53}{8}=\dfrac{13}{12}\)
\(x=\dfrac{13}{12}:\dfrac{53}{8}\)
\(x=\dfrac{26}{159}\)
g) \(\dfrac{3}{7}\times\left(x-1\dfrac{1}{3}\right)=\dfrac{1}{3}-\dfrac{1}{21}\)
\(\dfrac{3}{7}\times\left(x-\dfrac{4}{3}\right)=\dfrac{2}{7}\)
\(x-\dfrac{4}{3}=\dfrac{2}{7}:\dfrac{3}{7}\)
\(x-\dfrac{4}{3}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}+\dfrac{4}{3}\)
\(x=\dfrac{6}{3}=2\)
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