问题 解答题
x-25%x=24
1
2
x-
1
6
=
2
3
7
8
-
1
3
x=
1
4
2x+
1
4
=
5
6
答案

(1)x-25%x=24,

0.75x=24,

0.75x÷0.75=24÷0.75,

x=32;

(2)

1
2
x-
1
6
=
2
3

1
2
x-
1
6
+
1
6
=
2
3
+
1
6

1
2
x=
5
6

1
2
1
2
=
5
6
÷
1
2

x=

5
3

(3)

7
8
-
1
3
x=
1
4

1
3
x=
7
8
-
1
4

1
3
x=
5
8

1
3
1
3
=
5
8
÷
1
3

x=

15
8

(4)2x+

1
4
=
5
6

2x+

1
4
-
1
4
=
5
6
-
1
4

2x=

7
12

2x÷2=

7
12
÷2,

x=

7
24

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