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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)
7
x
+
6
43
=
−
9
9
(2)
10
x
+
2
78
=
−
5
5
(3)
−10
x
−
6
=
6
9
(4)
x
+
8
17
=
3
3
(5)
9
x
−
5
13
=
4
4
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
7
x
+
6
43
=
−
9
9
7
x
+
6
=
−43
7
x
=
−43
−
6
x
=
−7
(2)
10
x
+
2
78
=
−
5
5
10
x
+
2
=
−78
10
x
=
−78
−
2
x
=
−8
(3)
−10
x
−
6
=
6
9
−10
x
−
6
=
54
−10
x
=
54
+
6
x
=
−6
(4)
x
+
8
17
=
3
3
x
+
8
=
17
x
=
17
−
8
x
=
9
(5)
9
x
−
5
13
=
4
4
9
x
−
5
=
13
9
x
=
13
+
5
x
=
2