\(a,x-\dfrac{1}{3}=\dfrac{2}{3}\\ \Rightarrow x=\dfrac{2}{3}+\dfrac{1}{3}\\ \Rightarrow x=1\\ b,x+\dfrac{2}{7}=\dfrac{5}{7}\\ \Rightarrow x=\dfrac{5}{7}-\dfrac{2}{7}\\ \Rightarrow x=\dfrac{3}{7}\\ c,x-\dfrac{3}{10}=\dfrac{4}{10}\\ \Rightarrow x=\dfrac{4}{10}+\dfrac{3}{10}\\ \Rightarrow x=\dfrac{7}{10}\\ d,\dfrac{13}{17}-x=\dfrac{10}{17}\\ \Rightarrow x=\dfrac{13}{17}-\dfrac{10}{17}\\ \Rightarrow x=\dfrac{3}{17}\\ e,\dfrac{19}{21}-x=\dfrac{15}{21}\\ \Rightarrow x=\dfrac{19}{21}-\dfrac{15}{21}\\ \Rightarrow x=\dfrac{4}{21}\)
\(a,x-\dfrac{1}{3}=\dfrac{2}{3}\\ x=\dfrac{2}{3}+\dfrac{1}{3}\\ \Rightarrow x=1\\ b,x+\dfrac{2}{7}=\dfrac{5}{7}\\ x=\dfrac{5}{7}-\dfrac{2}{7}\\ \Rightarrow x=\dfrac{3}{7}\\ c,x-\dfrac{3}{10}=\dfrac{4}{10}\\ x=\dfrac{4}{10}+\dfrac{3}{10}\\ \Rightarrow x=\dfrac{7}{10}\\ d,\dfrac{13}{17}-x=\dfrac{10}{17}\\ x=\dfrac{13}{17}-\dfrac{10}{17}\\ \Rightarrow x=\dfrac{3}{17}\\ e,\dfrac{19}{21}-x=\dfrac{15}{21}\\ x=\dfrac{19}{21}-\dfrac{15}{21}\\ \Rightarrow x=\dfrac{4}{21}\)
a) \(x-\dfrac{1}{3}=\dfrac{2}{3}\)
\(x=\dfrac{2}{3}+\dfrac{1}{3}\)
\(x=\dfrac{3}{3}\)
b) \(x+\dfrac{2}{7}=\dfrac{5}{7}\)
\(x=\dfrac{5}{7}-\dfrac{2}{7}\)
\(x=\dfrac{3}{7}\)
c) \(x-\dfrac{3}{10}=\dfrac{4}{10}\)
\(x=\dfrac{4}{10}+\dfrac{3}{10}\)
\(x=\dfrac{7}{10}\)
d) \(\dfrac{13}{17}-x=\dfrac{10}{17}\)
\(x=\dfrac{13}{17}-\dfrac{10}{17}\)
\(x=\dfrac{3}{17}\)
e) \(\dfrac{19}{21}-x=\dfrac{15}{21}\)
\(x=\dfrac{19}{21}-\dfrac{15}{21}\)
\(x=\dfrac{4}{21}\)
