问题 解答题
2x+2.1=24.7
2
3
5
6
=x:
3
4
答案

(1)2x+2.1=24.7,

2x+2.1-2.1=24.7-2.1,

2x=22.6,

2x÷2=22.6÷2,

x=11.3;

(2)

2
3
5
6
=x:
3
4

5
6
x=
2
3
×
3
4

5
6
5
6
=
2
3
×
3
4
÷
5
6

x=

1
2
×
6
5

x=

3
5

判断题
单项选择题 A1型题