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©2025 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[0E4-00]
(1)
2
x
+
6
+
4
x
=
9
x
−
9
(2)
7
−
x
−
3
x
=
−2
x
+
3
(3)
−5
+
2
x
−
x
=
6
x
+
20
(4)
−1
+
4
x
+
5
x
=
−8
x
−
86
(5)
−9
x
+
7
=
10
x
+
132
+
6
x
(6)
−7
x
+
1
=
−2
x
+
21
+
5
x
(7)
2
x
−
2
x
+
2
=
−3
x
+
11
(8)
6
−
4
x
=
−8
x
−
7
x
+
50
(9)
−2
x
+
4
+
8
x
=
8
x
−
6
(10)
3
x
+
3
x
−
7
=
−6
x
+
41
(11)
−4
x
−
10
=
x
−
6
x
−
16
(12)
−6
x
−
3
=
−3
x
−
9
x
+
45
(13)
−4
−
6
x
=
−4
x
+
2
x
−
8
(14)
10
x
+
2
=
−5
x
−
64
+
4
x
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
x
+
6
+
4
x
=
9
x
−
9
2
x
+
4
x
−
9
x
=
−
9
−
6
x
=
−15
÷
(
−3
)
x
=
5
(2)
7
−
x
−
3
x
=
−2
x
+
3
−
x
−
3
x
+
2
x
=
3
−
7
x
=
−4
÷
(
−2
)
x
=
2
(3)
−5
+
2
x
−
x
=
6
x
+
20
2
x
−
x
−
6
x
=
20
+
5
x
=
25
÷
(
−5
)
x
=
−5
(4)
−1
+
4
x
+
5
x
=
−8
x
−
86
4
x
+
5
x
+
8
x
=
−
86
+
1
x
=
−85
÷
17
x
=
−5
(5)
−9
x
+
7
=
10
x
+
132
+
6
x
−9
x
−
10
x
−
6
x
=
132
−
7
x
=
125
÷
(
−25
)
x
=
−5
(6)
−7
x
+
1
=
−2
x
+
21
+
5
x
−7
x
+
2
x
−
5
x
=
21
−
1
x
=
20
÷
(
−10
)
x
=
−2
(7)
2
x
−
2
x
+
2
=
−3
x
+
11
2
x
−
2
x
+
3
x
=
11
−
2
x
=
9
÷
3
x
=
3
(8)
6
−
4
x
=
−8
x
−
7
x
+
50
−4
x
+
8
x
+
7
x
=
50
−
6
x
=
44
÷
11
x
=
4
(9)
−2
x
+
4
+
8
x
=
8
x
−
6
−2
x
+
8
x
−
8
x
=
−
6
−
4
x
=
−10
÷
(
−2
)
x
=
5
(10)
3
x
+
3
x
−
7
=
−6
x
+
41
3
x
+
3
x
+
6
x
=
41
+
7
x
=
48
÷
12
x
=
4
(11)
−4
x
−
10
=
x
−
6
x
−
16
−4
x
−
x
+
6
x
=
−
16
+
10
x
=
−6
÷
1
x
=
−6
(12)
−6
x
−
3
=
−3
x
−
9
x
+
45
−6
x
+
3
x
+
9
x
=
45
+
3
x
=
48
÷
6
x
=
8
(13)
−4
−
6
x
=
−4
x
+
2
x
−
8
−6
x
+
4
x
−
2
x
=
−8
+
4
x
=
−4
÷
(
−4
)
x
=
1
(14)
10
x
+
2
=
−5
x
−
64
+
4
x
10
x
+
5
x
−
4
x
=
−64
−
2
x
=
−66
÷
11
x
=
−6