若{6-x>2x-3 4x-1≥2-5x,则化简|x+1|-|2x-6|+|3x-9|=( )

问题描述:

若{6-x>2x-3 4x-1≥2-5x,则化简|x+1|-|2x-6|+|3x-9|=( )

6-x>2x-3得x