问题 解答题
解方程或比例.
①x÷
5
6
=30
3
5
x
-
1
4
x=7
8
11
:10=
4
5
:x
0.7
0.5
=
x
35
答案

①x÷

5
6
=30,

5
6
×
5
6
=30×
5
6

x=25;

3
5
x-
1
4
x=7,

3
5
-
1
4
)x=7,

7
20
x=7,

7
20
20
7
=7×
20
7

x=20;

8
11
:10=
4
5
:x,

8
11
x=
4
5
×10,

8
11
x=8,

8
11
11
8
=8×
11
8

x=11;

0.7
0.5
=
x
35

0.5x=35×0.7,

0.5x÷0.5=24.5÷0.5,

x=49.

单项选择题
单项选择题