问题 解答题
(1)Χ-
5
9
Χ-
4
9
=
2
3

(2)
6
5
:6=
Χ-1
5
答案

(1)Χ-

5
9
Χ-
4
9
=
2
3

          x-

5
9
x-
4
9
+
4
9
=
2
3
+
4
9

                 

4
9
x=
10
9

             

4
9
4
9
=
10
9
÷
4
9

                    x=

5
2

(2)

6
5
:6=
Χ-1
5

  6×(x-1)=

6
5
×5,

        6x-6=6,

      6x-6+6=6+6

          6x=12,

       6x÷6=12÷6,

            x=2.

单项选择题
单项选择题