\(\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=-\frac{13}{12}\)
\(\Rightarrow x\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)=\frac{-13}{12}\)
\(\Rightarrow x.\frac{13}{12}=\frac{-13}{12}\)
\(\Rightarrow x=-1\)
\(\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=-\frac{13}{12}\)
\(\Rightarrow\frac{6x}{12}+\frac{4x}{12}+\frac{3x}{12}=-\frac{13}{12}\)
\(\Leftrightarrow6x+4x+3x=-13\)
\(\Leftrightarrow13x=-13\)
\(\Leftrightarrow x=-1\)
\(\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=\frac{-13}{12}\)
\(\Leftrightarrow\frac{6x}{12}+\frac{4x}{12}+\frac{3x}{12}=\frac{-13}{12}\)
\(\Leftrightarrow\frac{6x+4x+3x}{12}=\frac{-13}{12}\)
\(\Leftrightarrow\frac{x\times\left(6+4+3\right)}{12}=\frac{-13}{12}\)
\(\Leftrightarrow\frac{x\times13}{12}=\frac{-13}{12}\)
\(\Leftrightarrow x\times13=-13\)
\(x=-13:13\)
\(\Rightarrow x=-1\)
\(\frac{x}{2}+\frac{x}{3}+\frac{x}{4}=\frac{-13}{12}\)
\(\Leftrightarrow\)\(\frac{6x}{12}+\frac{4x}{12}+\frac{3x}{12}=\frac{-13}{12}\)
\(\Leftrightarrow6x+4x+3x=-13\)
\(\Leftrightarrow\left(6+4+3\right)x=-13\)
\(\Leftrightarrow13x=-13\)
\(\Leftrightarrow x-1\)