Ta có: \(x+\dfrac{1}{2}x-25\%x=10\)
\(\Rightarrow x\left(1+\dfrac{1}{2}-25\%\right)=10\)
\(\Rightarrow x\left(\dfrac{4}{4}+\dfrac{2}{4}-\dfrac{1}{4}\right)=10\)
\(\Rightarrow x\dfrac{5}{4}=10\)
\(\Rightarrow x=10:\dfrac{5}{4}=10.\dfrac{4}{5}\)
\(\Rightarrow x=8\)
Chúc bạn học tốt!!!
