问题 解答题
求未知数X
6
35
=
26
45
÷
13
25
0.75X-
1
4
=
1
2
答案

(1)X÷

6
35
=
26
45
÷
13
25

6
35
=
10
9

6
35
×
6
35
=
10
9
×
6
35

X=

4
21

(2)0.75X-

1
4
=
1
2

0.75X-

1
4
+
1
4
=
1
2
+
1
4

0.75X=

3
4

0.75X÷0.75=

3
4
÷0.75,

X=1.

单项选择题
单项选择题