问题 解答题
解方程.
x
16
-
1
4
=
3
8

2x-
7
10
=
3
10

x-
3
10
=
2
7

3
8
+x=
7
12
答案

(1)

x
16
-
1
4
=
3
8

x
16
=
3
8
+
1
4

x
16
=
5
8

x=

5
8
×16,

x=10;

(2)2x-

7
10
=
3
10

2x=

3
10
+
7
10

2x=1,

x=

1
2

(3)x-

3
10
=
2
7

x=

3
10
+
2
7

x=

41
70

(4)

3
8
+x=
7
12

x=

7
12
-
3
8

x=

5
24

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