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©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[0E7-00]
(1)
9
x
−
1
82
=
−
3
3
(2)
9
x
−
7
79
=
−
5
5
(3)
3
x
+
6
5
=
6
2
(4)
7
x
+
1
19
=
6
2
(5)
4
x
+
7
35
=
3
3
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
9
x
−
1
82
=
−
3
3
9
x
−
1
=
−82
9
x
=
−82
+
1
x
=
−9
(2)
9
x
−
7
79
=
−
5
5
9
x
−
7
=
−79
9
x
=
−79
+
7
x
=
−8
(3)
3
x
+
6
5
=
6
2
3
x
+
6
=
15
3
x
=
15
−
6
x
=
3
(4)
7
x
+
1
19
=
6
2
7
x
+
1
=
57
7
x
=
57
−
1
x
=
8
(5)
4
x
+
7
35
=
3
3
4
x
+
7
=
35
4
x
=
35
−
7
x
=
7