\(7.\left(x-3\right)-5.\left(3-x\right)=11x-5\)
\(7x-21-15+5x=11x-5\)
\(12x-36=11x-5\)
\(12x-11x=-5+36\)
\(x=31\)
Vậy \(x=31\)
\(7.\left(x-3\right)-5.\left(3-x\right)=11x-5\)
\(7x-7.3-5.3+5x=11x-5\)
\(7x-21-15+5x=11x-5\)
\(7x-\left(21+15\right)+5x=11x-5\)
\(7x-36+5x=11x-5\)
\(7x+5x-36=11x-5\)
\(12x-11x=\left(-5\right)+36\)
\(x=31\)