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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
[222-00]
(1)
2
3
x
=
−
24
x
(2)
2
5
x
=
30
x
(3)
2
5
x
=
−
15
x
(4)
2
3
x
+
24
x
=
0
(5)
2
7
x
=
−
56
x
(6)
2
x
=
−
9
x
(7)
2
x
−
x
=
0
(8)
2
2
x
+
3
x
=
0
(9)
2
6
x
−
36
x
=
0
(10)
2
4
x
=
32
x
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
3
x
=
−
24
x
3
x
(
x
+
8
)
=
0
x
=
0
,
−8
(2)
2
5
x
=
30
x
5
x
(
x
−
6
)
=
0
x
=
0
,
6
(3)
2
5
x
=
−
15
x
5
x
(
x
+
3
)
=
0
x
=
0
,
−3
(4)
2
3
x
+
24
x
=
0
3
x
(
x
+
8
)
=
0
x
=
0
,
−8
(5)
2
7
x
=
−
56
x
7
x
(
x
+
8
)
=
0
x
=
0
,
−8
(6)
2
x
=
−
9
x
x
(
x
+
9
)
=
0
x
=
0
,
−9
(7)
2
x
−
x
=
0
x
(
x
−
1
)
=
0
x
=
0
,
1
(8)
2
2
x
+
3
x
=
0
3
2
x
(
x
+
)
2
=
0
x
3
=
0
,
−
2
(9)
2
6
x
−
36
x
=
0
6
x
(
x
−
6
)
=
0
x
=
0
,
6
(10)
2
4
x
=
32
x
4
x
(
x
−
8
)
=
0
x
=
0
,
8