问题 解答题
巧解x,记住写解哦!
2
3
x=
2
9

6
7
=
1
7

x-
7
8
=
7
8
答案

2
3
X=
2
9

2
3
2
3
=
2
9
÷
2
3

x=

2
9
×
3
2

x=

1
3

(2)x÷

6
7
=
1
7

6
7
×
6
7
=
1
7
×
6
7

x=

6
49

(3)x-

7
8
=
7
8

x-

7
8
+
7
8
=
7
8
+
7
8

x=

14
8

x=

7
4

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