问题 解答题
解下列方程.
2Χ-8.125=18.125Χ-
5
6
=
7
18
3
4
-(Χ+
1
3
)
=
1
6
答案

(1)2Χ-8.125=18.125,

2Χ-8.125+8.125=18.125+8.125,

            2Χ=26.25,

         2Χ÷2=26.25÷2,

             Χ=13.125;

(2)Χ-

5
6
=
7
18

  Χ-

5
6
+
5
6
=
7
18
+
5
6

       Χ=

11
9

(3)

3
4
-(Χ+
1
3
)=
1
6

3
4
-(Χ+
1
3
)+(x+
1
3
)=
1
6
+(x+
1
3
),

            x+

1
3
+
1
6
=
3
4

               x+

1
2
=
3
4

            x+

1
2
-
1
2
=
3
4
-
1
2

                 x=

1
4

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