a: Ta có: \(\dfrac{17}{6}-\left(x-\dfrac{7}{6}\right)=\dfrac{7}{4}\)
\(\Leftrightarrow x-\dfrac{7}{6}=\dfrac{13}{12}\)
hay \(x=\dfrac{9}{4}\)
b: Ta có: \(\dfrac{3}{35}-\left(\dfrac{3}{5}-x\right)=\dfrac{2}{7}\)
\(\Leftrightarrow\dfrac{3}{5}-x=-\dfrac{1}{5}\)
hay \(x=\dfrac{4}{5}\)
a]x=4/5vì áp dụng t/chất cộng tổng