Solve the following equation:

$3x-8=x$3x−8=x

Solve the following equation: $2x+5=x$2x+5=x

Solve the following equation: $9x-45=4x$9x−45=4x

$10x+4=6x$10x+4=6x

Solve first-degree equations involving one variable, including equations with fractional coefficients