问题 解答题
解下列方程.X+
8
17
=15X-
7
8
=
9
8
答案

(1)x+

8
17
=1,

x+

8
17
-
8
17
=1-
8
17

x=

9
17

(2)5x-

7
8
=
9
8

5x-

7
8
+
7
8
=
9
8
+
7
8

5x=2,

5x÷5=2÷5,

x=

2
5

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