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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)
−9
x
−
1
=
10
x
−
8
x
−
89
(2)
−7
−
9
x
=
−8
x
＋
4
x
−
27
(3)
5
x
＋
8
＋
7
x
=
x
−
58
(4)
−7
x
＋
2
x
＋
5
=
−4
x
＋
13
(5)
−7
x
＋
3
x
−
9
=
−7
x
(6)
10
x
＋
1
＋
3
x
=
6
x
＋
22
(7)
9
x
＋
10
=
5
x
＋
7
＋
x
(8)
−8
＋
8
x
=
x
−
5
x
−
116
(9)
−9
＋
9
x
＋
7
x
=
−5
x
−
135
(10)
−5
x
＋
10
=
−7
x
−
2
x
＋
2
(11)
6
＋
8
x
＋
3
x
=
10
x
＋
12
(12)
4
x
−
10
−
3
x
=
−4
x
＋
40
(13)
−8
x
−
6
＋
4
x
=
−8
x
−
30
(14)
−1
−
3
x
=
−2
x
＋
10
x
＋
10
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−9
x
−
1
=
10
x
−
8
x
−
89
−9
x
−
10
x
＋
8
x
=
−89
＋
1
x
=
−88
÷
(
−11
)
x
=
8
(2)
−7
−
9
x
=
−8
x
＋
4
x
−
27
−9
x
＋
8
x
−
4
x
=
−
27
＋
7
x
=
−20
÷
(
−5
)
x
=
4
(3)
5
x
＋
8
＋
7
x
=
x
−
58
5
x
＋
7
x
−
x
=
−58
−
8
x
=
−66
÷
11
x
=
−6
(4)
−7
x
＋
2
x
＋
5
=
−4
x
＋
13
−7
x
＋
2
x
＋
4
x
=
13
−
5
x
=
8
÷
(
−1
)
x
=
−8
(5)
−7
x
＋
3
x
−
9
=
−7
x
−7
x
＋
3
x
＋
7
x
=
9
x
=
9
÷
3
x
=
3
(6)
10
x
＋
1
＋
3
x
=
6
x
＋
22
10
x
＋
3
x
−
6
x
=
22
−
1
x
=
21
÷
7
x
=
3
(7)
9
x
＋
10
=
5
x
＋
7
＋
x
9
x
−
5
x
−
x
=
7
−
10
x
=
−3
÷
3
x
=
−1
(8)
−8
＋
8
x
=
x
−
5
x
−
116
8
x
−
x
＋
5
x
=
−
116
＋
8
x
=
−108
÷
12
x
=
−9
(9)
−9
＋
9
x
＋
7
x
=
−5
x
−
135
9
x
＋
7
x
＋
5
x
=
−
135
＋
9
x
=
−126
÷
21
x
=
−6
(10)
−5
x
＋
10
=
−7
x
−
2
x
＋
2
−5
x
＋
7
x
＋
2
x
=
2
−
10
x
=
−8
÷
4
x
=
−2
(11)
6
＋
8
x
＋
3
x
=
10
x
＋
12
8
x
＋
3
x
−
10
x
=
12
−
6
x
=
6
÷
1
x
=
6
(12)
4
x
−
10
−
3
x
=
−4
x
＋
40
4
x
−
3
x
＋
4
x
=
40
＋
10
x
=
50
÷
5
x
=
10
(13)
−8
x
−
6
＋
4
x
=
−8
x
−
30
−8
x
＋
4
x
＋
8
x
=
−30
＋
6
x
=
−24
÷
4
x
=
−6
(14)
−1
−
3
x
=
−2
x
＋
10
x
＋
10
−3
x
＋
2
x
−
10
x
=
10
＋
1
x
=
11
÷
(
−11
)
x
=
−1