[文字サイズの変更]
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[225-00]
(1)
2
x
+
6
x
−
2
=
2
(
−2
x
−
13
)
(2)
(
x
−
1
)
(
x
+
4
)
=
6
(3)
2
x
+
x
+
6
=
3
(
−5
x
−
18
)
(4)
(
x
+
7
)
(
x
+
9
)
=
33
x
−
7
(5)
(
x
+
10
)
(
x
+
1
)
=
6
(
−
x
−
10
)
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
x
+
6
x
−
2
=
2
(
−2
x
−
13
)
2
x
+
10
x
+
24
=
0
(
x
+
4
)
(
x
+
6
)
=
0
x
=
−4
,
−6
(2)
(
x
−
1
)
(
x
+
4
)
=
6
2
x
+
3
x
−
4
=
6
2
x
+
3
x
−
10
=
0
(
x
−
2
)
(
x
+
5
)
=
0
x
=
2
,
−5
(3)
2
x
+
x
+
6
=
3
(
−5
x
−
18
)
2
x
+
16
x
+
60
=
0
(
x
+
6
)
(
x
+
10
)
=
0
x
=
−6
,
−10
(4)
(
x
+
7
)
(
x
+
9
)
=
33
x
−
7
2
x
+
16
x
+
63
=
33
x
−
7
2
x
−
17
x
+
70
=
0
(
x
−
10
)
(
x
−
7
)
=
0
x
=
10
,
7
(5)
(
x
+
10
)
(
x
+
1
)
=
6
(
−
x
−
10
)
2
x
+
11
x
+
10
=
−6
x
−
60
2
x
+
17
x
+
70
=
0
(
x
+
10
)
(
x
+
7
)
=
0
x
=
−10
,
−7