问题 解答题
求未知数x
(1)
2
3
5
:6
=x:9

(2)
3
4
x-5=1.5
答案

(1)

2
3
5
6
=x:9,

5
6
x=9×
2
3

5
6
6
5
=6×
6
5

x=

36
5

(2)

3
4
x-5=1.5,

3
4
x-5+5=1.5+5,

3
4
4
3
=6.5×
4
3

x=6.5×

4
3

x=

26
3

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