\(c,\dfrac{x-1}{9}=\dfrac{2}{-3}\\ \Rightarrow c,\dfrac{x-1}{9}=\dfrac{-6}{9}\\ \Rightarrow x-1=-6\\ \Rightarrow x=-5\\ g,\dfrac{5}{4}-x=\dfrac{1}{2}-\dfrac{7}{8}\\ \Rightarrow\dfrac{5}{4}-x=-\dfrac{3}{8}\\ \Rightarrow x=\dfrac{13}{8}\\ k,3\dfrac{2}{3}x+5\dfrac{1}{2}=11\dfrac{1}{6}\\\Rightarrow \dfrac{11}{3}x+\dfrac{11}{2}=\dfrac{67}{6}\\ \Rightarrow\dfrac{11}{3}x=\dfrac{17}{3}\\ \Rightarrow x=\dfrac{17}{11}\\ m,\dfrac{x-1}{9}=\dfrac{2}{-3}\\ \Rightarrow c,\dfrac{x-1}{9}=\dfrac{-6}{9}\\ \Rightarrow x-1=-6\\ \Rightarrow x=-5\)
c: \(\dfrac{x-1}{9}=\dfrac{-2}{3}\)
=>x-1=-6
hay x=-5
g: \(\dfrac{5}{4}-x=\dfrac{1}{2}-\dfrac{7}{8}=\dfrac{4}{8}-\dfrac{7}{8}=\dfrac{-3}{8}\)
\(\Leftrightarrow x=\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)
k: \(\Leftrightarrow x\cdot\dfrac{11}{3}=\dfrac{67}{6}-\dfrac{11}{2}=\dfrac{67}{6}-\dfrac{33}{6}=\dfrac{34}{6}=\dfrac{17}{3}\)
hay x=17/11
m: x-1/9=2/-3
=>x-1=-6
hay x=-5
\(c,\dfrac{x-1}{9}=\dfrac{2}{-3}\\ \left(x-1\right)\cdot\left(-3\right)=9\cdot2=18\\ x-1=18:\left(-3\right)\\ x-1=-6\\ x=-5\)
\(c.\dfrac{x-1}{9}=\dfrac{2}{-3}.\\ \Leftrightarrow\dfrac{x-1}{9}+\dfrac{2}{3}=0.\\ \Leftrightarrow\dfrac{x-1+6}{9}=0.\\ \Rightarrow x=-5.\)
\(g.\dfrac{5}{4}-x=\dfrac{1}{2}-\dfrac{7}{8}.\\ \Leftrightarrow\dfrac{5}{4}-x=\dfrac{-3}{8}.\\ \Leftrightarrow x=\dfrac{13}{8}.\)
\(k.3\dfrac{2}{3}x+5\dfrac{1}{2}=11\dfrac{1}{6}.\\ \Leftrightarrow\dfrac{11}{3}x+\dfrac{11}{2}=\dfrac{67}{6}.\\ \Leftrightarrow\dfrac{11}{3}x=\dfrac{17}{3}.\\ \Leftrightarrow x=\dfrac{17}{11}.\)
\(m.\dfrac{x-1}{9}=\dfrac{2}{-3}.\\ \Leftrightarrow\dfrac{x-1}{9}+\dfrac{2}{3}=0.\\ \Leftrightarrow\dfrac{x-1+6}{9}=0.\\ \Rightarrow x=-5.\)
