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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)
4
x
+
9
25
=
7
7
(2)
−8
x
−
5
43
=
10
10
(3)
−8
x
+
6
38
=
5
5
(4)
x
−
8
=
0
3
(5)
−3
x
+
2
7
=
−
9
9
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
4
x
+
9
25
=
7
7
4
x
+
9
=
25
4
x
=
25
−
9
x
=
4
(2)
−8
x
−
5
43
=
10
10
−8
x
−
5
=
43
−8
x
=
43
+
5
x
=
−6
(3)
−8
x
+
6
38
=
5
5
−8
x
+
6
=
38
−8
x
=
38
−
6
x
=
−4
(4)
x
−
8
=
0
3
x
−
8
=
0
x
=
8
x
=
8
(5)
−3
x
+
2
7
=
−
9
9
−3
x
+
2
=
−7
−3
x
=
−7
−
2
x
=
3