6x+19x=22.5 x+17%=9.36 78%x=39 70%x-18%x=3.12 12x+53=137 28%x+375x=22.75
问题描述:
6x+19x=22.5 x+17%=9.36 78%x=39 70%x-18%x=3.12 12x+53=137 28%x+375x=22.75
答
6x+19x=22.5 x+17%=9.36 78%x=39 70%x-18%x=3.12 12x+53=137 28%x+375x=22.75