问题 解答题
解方程.
X-60%=60X-
2
7
X=
1
14
(A-
1
3
):
3
4
=
5
6
答案

(1)X-60%=60,

X-60%+60%=60+60%,

X=60.6;

(2)X-

2
7
X=
1
14

5
7
X=
1
14

5
7
5
7
=
1
14
÷
5
7

X=

1
10

(3)(A-

1
3
):
3
4
=
5
6

(A-

1
3
)÷
3
4
=
5
6

(A-

1
3
)÷
3
4
×
3
4
=
5
6
×
3
4

A-

1
3
=
5
8

A-

1
3
+
1
3
=
5
8
+
1
3

A=

23
24

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