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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
[0E4-00]
(1)
2
x
+
3
=
2
x
+
10
+
7
x
(2)
−6
x
−
7
x
−
3
=
−6
x
+
18
(3)
−10
−
4
x
=
−
x
+
2
x
−
35
(4)
9
x
+
1
=
−5
x
−
7
+
6
x
(5)
5
x
−
1
=
7
x
−
x
−
5
(6)
8
+
3
x
=
−7
x
−
5
x
+
38
(7)
6
x
+
7
=
−
x
+
34
+
4
x
(8)
−3
x
+
1
=
8
x
−
89
+
4
x
(9)
−3
+
4
x
+
6
x
=
−2
x
+
9
(10)
8
+
3
x
+
2
x
=
−
x
−
16
(11)
4
−
6
x
=
−6
x
+
5
x
+
54
(12)
−4
x
−
4
=
4
x
+
20
+
4
x
(13)
−1
+
7
x
=
4
x
−
8
x
+
10
(14)
9
x
+
5
x
+
5
=
−3
x
+
39
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
x
+
3
=
2
x
+
10
+
7
x
2
x
−
2
x
−
7
x
=
10
−
3
x
=
7
÷
(
−7
)
x
=
−1
(2)
−6
x
−
7
x
−
3
=
−6
x
+
18
−6
x
−
7
x
+
6
x
=
18
+
3
x
=
21
÷
(
−7
)
x
=
−3
(3)
−10
−
4
x
=
−
x
+
2
x
−
35
−4
x
+
x
−
2
x
=
−35
+
10
x
=
−25
÷
(
−5
)
x
=
5
(4)
9
x
+
1
=
−5
x
−
7
+
6
x
9
x
+
5
x
−
6
x
=
−
7
−
1
x
=
−8
÷
8
x
=
−1
(5)
5
x
−
1
=
7
x
−
x
−
5
5
x
−
7
x
+
x
=
−5
+
1
x
=
−4
÷
(
−1
)
x
=
4
(6)
8
+
3
x
=
−7
x
−
5
x
+
38
3
x
+
7
x
+
5
x
=
38
−
8
x
=
30
÷
15
x
=
2
(7)
6
x
+
7
=
−
x
+
34
+
4
x
6
x
+
x
−
4
x
=
34
−
7
x
=
27
÷
3
x
=
9
(8)
−3
x
+
1
=
8
x
−
89
+
4
x
−3
x
−
8
x
−
4
x
=
−
89
−
1
x
=
−90
÷
(
−15
)
x
=
6
(9)
−3
+
4
x
+
6
x
=
−2
x
+
9
4
x
+
6
x
+
2
x
=
9
+
3
x
=
12
÷
12
x
=
1
(10)
8
+
3
x
+
2
x
=
−
x
−
16
3
x
+
2
x
+
x
=
−16
−
8
x
=
−24
÷
6
x
=
−4
(11)
4
−
6
x
=
−6
x
+
5
x
+
54
−6
x
+
6
x
−
5
x
=
54
−
4
x
=
50
÷
(
−5
)
x
=
−10
(12)
−4
x
−
4
=
4
x
+
20
+
4
x
−4
x
−
4
x
−
4
x
=
20
+
4
x
=
24
÷
(
−12
)
x
=
−2
(13)
−1
+
7
x
=
4
x
−
8
x
+
10
7
x
−
4
x
+
8
x
=
10
+
1
x
=
11
÷
11
x
=
1
(14)
9
x
+
5
x
+
5
=
−3
x
+
39
9
x
+
5
x
+
3
x
=
39
−
5
x
=
34
÷
17
x
=
2