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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)
3
x
+
5
=
2
4
(2)
−8
x
+
1
25
=
4
4
(3)
8
x
+
3
35
=
2
2
(4)
−6
x
+
9
15
=
4
4
(5)
−4
x
+
1
=
5
5
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
x
+
5
=
2
4
3
x
+
5
=
8
3
x
=
8
−
5
x
=
1
(2)
−8
x
+
1
25
=
4
4
−8
x
+
1
=
25
−8
x
=
25
−
1
x
=
−3
(3)
8
x
+
3
35
=
2
2
8
x
+
3
=
35
8
x
=
35
−
3
x
=
4
(4)
−6
x
+
9
15
=
4
4
−6
x
+
9
=
15
−6
x
=
15
−
9
x
=
−1
(5)
−4
x
+
1
=
5
5
−4
x
+
1
=
25
−4
x
=
25
−
1
x
=
−6