问题 解答题
解方程.
1
3
(x+
3
5
)=
2
3

60%x+
1
5
=
3
4
答案

(1)

1
3
(x+
3
5
)=
2
3

1
3
(x+
3
5
)×3=
2
3
×3

x+

3
5
=2

x+

3
5
-
3
5
=2-
3
5

x=

7
5

(2)60%x+

1
5
=
3
4

3
5
x+
1
5
=
3
4

3
5
x+
1
5
-
1
5
=
3
4
-
1
5

3
5
x=
11
20

3
5
5
3
=
11
20
×
5
3

x=

11
12

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