解方程.①6x-3.6×2=9.6 ②9x-4.6x=15....

解方程.①6x-3.6×2=9.6 ②9x-4.6x=15.4 ③14.5-x+12=18.4.
2024-11-24 11:12:07
推荐回答(1个)
回答1:

①6x-3.6×2=9.6,
         6x-7.2=9.6,
     6x-7.2+7.2=9.6+7.2,
             6x=16.8,
          6x÷6=16.8÷6,
              x=2.8;

②9x-4.6x=15.4,
(9-4.6)x=15.4,
      4.4x=15.4,
 4.4x÷4.4=15.4÷4.4,
         x=3.5;

③14.5-x+12=18.4,
     26.5-x=18.4,
   26.5-x+x=18.4+x,
     18.4+x=26.5,
18.4+x-18.4=26.5-18.4,
          x=8.1.