x+3/4-1/3=0
x+3/4=0+1/3
x+3/4=1/3
x=1/3-3/4
x= -5/12
Có vẻ bạn ghi sai đề bài rồi
\(x+\frac{3}{4}-\frac{-1}{3}=0\)
\(=x+\frac{3}{4}=0+\frac{1}{3}\)
\(\Rightarrow x+\frac{3}{4}=\frac{1}{3}\)
\(x=\frac{1}{3}-\frac{3}{4}\)
\(x=\frac{5}{12}\)
Vậy \(x=\frac{-5}{12}\).