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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)
5
x
+
8
13
=
8
8
(2)
6
x
+
8
7
=
4
2
(3)
9
x
−
8
44
=
−
7
7
(4)
−2
x
+
5
11
=
−
2
2
(5)
−5
x
+
5
45
=
8
8
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
5
x
+
8
13
=
8
8
5
x
+
8
=
13
5
x
=
13
−
8
x
=
1
(2)
6
x
+
8
7
=
4
2
6
x
+
8
=
14
6
x
=
14
−
8
x
=
1
(3)
9
x
−
8
44
=
−
7
7
9
x
−
8
=
−44
9
x
=
−44
+
8
x
=
−4
(4)
−2
x
+
5
11
=
−
2
2
−2
x
+
5
=
−11
−2
x
=
−11
−
5
x
=
8
(5)
−5
x
+
5
45
=
8
8
−5
x
+
5
=
45
−5
x
=
45
−
5
x
=
−8