\[6x - 7\ и\ 2x + 3\]
\[6x - 7 - (2x + 3) = 4\]
\[6x - 7 - 2x - 3 = 4\]
\[4x = 4 + 10\]
\[4x = 14\]
\[x = 3,5.\]
\[Ответ:при\ x = 3,5.\]