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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)
5
x
＋
10
=
−2
x
−
8
x
＋
145
(2)
9
x
＋
9
=
−5
x
＋
153
−
2
x
(3)
−4
x
−
5
=
−2
x
＋
4
x
＋
13
(4)
2
x
−
2
x
＋
5
=
−3
x
＋
20
(5)
−9
x
＋
3
=
7
x
＋
203
＋
4
x
(6)
−10
−
8
x
=
−8
x
−
7
x
＋
46
(7)
−8
＋
8
x
−
4
x
=
9
x
−
53
(8)
−3
x
−
8
=
9
x
−
x
＋
47
(9)
7
x
＋
1
=
8
x
−
23
−
9
x
(10)
2
x
＋
6
=
−7
x
＋
26
＋
7
x
(11)
−8
x
＋
3
x
＋
10
=
9
x
＋
52
(12)
8
x
＋
3
x
−
7
=
−9
x
＋
13
(13)
−3
x
＋
8
=
5
x
−
40
＋
4
x
(14)
10
x
＋
10
x
−
9
=
−3
x
−
239
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
5
x
＋
10
=
−2
x
−
8
x
＋
145
5
x
＋
2
x
＋
8
x
=
145
−
10
x
=
135
÷
15
x
=
9
(2)
9
x
＋
9
=
−5
x
＋
153
−
2
x
9
x
＋
5
x
＋
2
x
=
153
−
9
x
=
144
÷
16
x
=
9
(3)
−4
x
−
5
=
−2
x
＋
4
x
＋
13
−4
x
＋
2
x
−
4
x
=
13
＋
5
x
=
18
÷
(
−6
)
x
=
−3
(4)
2
x
−
2
x
＋
5
=
−3
x
＋
20
2
x
−
2
x
＋
3
x
=
20
−
5
x
=
15
÷
3
x
=
5
(5)
−9
x
＋
3
=
7
x
＋
203
＋
4
x
−9
x
−
7
x
−
4
x
=
203
−
3
x
=
200
÷
(
−20
)
x
=
−10
(6)
−10
−
8
x
=
−8
x
−
7
x
＋
46
−8
x
＋
8
x
＋
7
x
=
46
＋
10
x
=
56
÷
7
x
=
8
(7)
−8
＋
8
x
−
4
x
=
9
x
−
53
8
x
−
4
x
−
9
x
=
−
53
＋
8
x
=
−45
÷
(
−5
)
x
=
9
(8)
−3
x
−
8
=
9
x
−
x
＋
47
−3
x
−
9
x
＋
x
=
47
＋
8
x
=
55
÷
(
−11
)
x
=
−5
(9)
7
x
＋
1
=
8
x
−
23
−
9
x
7
x
−
8
x
＋
9
x
=
−23
−
1
x
=
−24
÷
8
x
=
−3
(10)
2
x
＋
6
=
−7
x
＋
26
＋
7
x
2
x
＋
7
x
−
7
x
=
26
−
6
x
=
20
÷
2
x
=
10
(11)
−8
x
＋
3
x
＋
10
=
9
x
＋
52
−8
x
＋
3
x
−
9
x
=
52
−
10
x
=
42
÷
(
−14
)
x
=
−3
(12)
8
x
＋
3
x
−
7
=
−9
x
＋
13
8
x
＋
3
x
＋
9
x
=
13
＋
7
x
=
20
÷
20
x
=
1
(13)
−3
x
＋
8
=
5
x
−
40
＋
4
x
−3
x
−
5
x
−
4
x
=
−
40
−
8
x
=
−48
÷
(
−12
)
x
=
4
(14)
10
x
＋
10
x
−
9
=
−3
x
−
239
10
x
＋
10
x
＋
3
x
=
−
239
＋
9
x
=
−230
÷
23
x
=
−10