\(\frac{1}{2}+\frac{2}{3}\cdot x-x=4\)
\(\frac{7}{6}\cdot x-x=4\)
\(x-x=\frac{7}{24}\)
\(\Rightarrow x=\frac{-21}{2}\)
\(\frac{2}{3}x-x=4-\frac{1}{2}\)
\(-\frac{1}{3}x=\frac{7}{2}\)
\(x=-\frac{21}{2}\)
1/2+2/3x-x=4
2/3x-x=4-1/2
2/3x-x=7/2
x(2/3-1)=7/2
x(-1/3)=7/2
x=7/2:(-1/3)
x=-21/2