解方程.x+15%x=4.6 17.3+40%x=22.5 &...

解方程.x+15%x=4.6 17.3+40%x=22.5 35x-3.5%x=0.95.
2025-05-17 15:15:00
推荐回答(1个)
回答1:

(1)x+15%x=4.6
          115%x=4.6
    115%x÷115%=4.6÷115%,
              x=4;

(2)17.3+40%x=22.5
17.3+40%x-17.3=22.5-17.3
          40%x=5.2
     40%x÷40%=5.2÷40%
             x=13;

(3)

3
5
x-3.5%x=0.95
       0.565x=0.95
0.565x÷0.565=0.95÷0.565
            x=
190
113