\(\dfrac{3}{2}x+\dfrac{3}{4}=\dfrac{4}{5}-x\)\(\Rightarrow\dfrac{3}{2}x+x=\dfrac{4}{5}-\dfrac{3}{4}\)\(\Rightarrow\dfrac{5}{2}x=\dfrac{1}{20}\)\(\Rightarrow x=\dfrac{1}{20}:\dfrac{5}{2}\)\(\Rightarrow x=\dfrac{1}{50}\)Câu trả lời: \(\dfrac{3}{2}x+\dfrac{3}{4}=\dfrac{4}{5}-x\)\(\Rightarrow\dfrac{3}{2}x+x=\dfrac{4}{5}-\dfrac{3}{4}\)\(\Rightarrow\dfrac{5}{2}x=\dfrac{1}{20}\)\(\Rightarrow x=\dfrac{1}{20}:\dfrac{5}{2}\)\(\Rightarrow x=\dfrac{1}{50}\)