a) \(x-1\frac{4}{5}=\frac{10}{5}\)
\(\Rightarrow x=2+1\frac{4}{5}=3\frac{4}{5}=\frac{19}{5}\)
b) \(5,85:x=26-25,5\)
\(\Leftrightarrow5,85:x=0,5\)
\(\Rightarrow x=5,85:0,5=11,7\)
c) \(151-\left(-2\right).\left(x-6\right)=2227:17=131\)
\(\Rightarrow\left(-2\right).\left(x-6\right)=151-131=20\)
\(\Rightarrow\left(x-6\right)=20:\left(-2\right)=-10\)
\(\Rightarrow x=-4\)
d) \(\frac{2}{3}-\frac{1}{3}x=\frac{1}{4}\)
\(\Rightarrow \frac{1}{3}x=\frac{2}{3}-\frac{1}{4}=\frac{5}{12}\)
\(\Rightarrow x=\frac{5}{12}:\frac{1}{3}=\frac{5}{4}\)
dấu chấm (.) là dấu nhân nhé