\(-12x+60+21-7x=5\)\(5\)
\(-19x+81=5\)
\(-19x=5-81\)
\(-19x=-76\)
\(x=\frac{-76}{-19}\)
\(x=4\)
Vậy \(x=4\)
Ta có: -12(x-5) + 7(3-x) = 5
\(\Rightarrow-12x+60+21-7x=5\)
\(\Rightarrow-19x+81=5\)
\(\Rightarrow-19x=-76\)
\(\Rightarrow x=\frac{76}{19}=4\)