问题 解答题
解下列方程.
5
8
=
3
5

4
5
x-18×
2
3
=4
x+
3
5
x=
16
17
答案

(1)x÷

5
8
=
3
5

5
8
×
5
8
=
3
5
×
5
8

x=

3
8

(2)

4
5
x-18×
2
3
=4,

4
5
x-12=4,

4
5
x-12+12=4+12,

4
5
5
4
=16×
5
4

x=20;

(3)x+

3
5
x=
16
17

8
5
x=
16
17

8
5
5
8
=
16
17
×
5
8

x=

10
17

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