解方程 5x-5×1/3=0.8.

问题描述:

解方程   
5x-5×

1
3
=0.8.

5x-5×

1
3
=0.8
      5x-
5
3
=
4
5

    5x+
5
3
-
5
3
=
4
5
+
5
3

         5x=
12
15
+
25
15

         5x=
37
15

      5x×
1
5
=
37
15
×
1
5

          x=
37
75