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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)
−8
x
+
5
=
7
3
(2)
−
x
+
3
1
=
−
9
9
(3)
7
x
−
6
9
=
8
2
(4)
9
x
+
10
1
=
6
6
(5)
x
+
8
3
=
10
10
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−8
x
+
5
=
7
3
−8
x
+
5
=
21
−8
x
=
21
−
5
x
=
−2
(2)
−
x
+
3
1
=
−
9
9
−
x
+
3
=
−1
−
x
=
−1
−
3
x
=
4
(3)
7
x
−
6
9
=
8
2
7
x
−
6
=
36
7
x
=
36
+
6
x
=
6
(4)
9
x
+
10
1
=
6
6
9
x
+
10
=
1
9
x
=
1
−
10
x
=
−1
(5)
x
+
8
3
=
10
10
x
+
8
=
3
x
=
3
−
8
x
=
−5