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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)
3
x
−
9
−
9
x
=
−7
x
−
13
(2)
2
x
−
1
=
10
x
＋
10
＋
3
x
(3)
3
x
＋
2
=
−9
x
＋
40
−
7
x
(4)
−7
x
＋
6
=
6
x
−
5
x
−
74
(5)
−9
x
＋
8
＋
3
x
=
−2
x
−
16
(6)
8
x
＋
3
=
−5
x
−
57
＋
x
(7)
2
x
−
10
＋
x
=
−5
x
＋
6
(8)
−4
x
−
3
＋
9
x
=
7
x
＋
9
(9)
2
＋
5
x
=
8
x
−
5
x
＋
8
(10)
8
x
＋
2
x
＋
8
=
−5
x
＋
158
(11)
−10
＋
4
x
−
5
x
=
7
x
−
66
(12)
9
x
＋
1
=
−7
x
＋
9
x
＋
71
(13)
10
x
＋
3
＋
5
x
=
−2
x
−
14
(14)
−8
x
＋
1
=
2
x
−
2
x
＋
49
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
x
−
9
−
9
x
=
−7
x
−
13
3
x
−
9
x
＋
7
x
=
−13
＋
9
x
=
−4
÷
1
x
=
−4
(2)
2
x
−
1
=
10
x
＋
10
＋
3
x
2
x
−
10
x
−
3
x
=
10
＋
1
x
=
11
÷
(
−11
)
x
=
−1
(3)
3
x
＋
2
=
−9
x
＋
40
−
7
x
3
x
＋
9
x
＋
7
x
=
40
−
2
x
=
38
÷
19
x
=
2
(4)
−7
x
＋
6
=
6
x
−
5
x
−
74
−7
x
−
6
x
＋
5
x
=
−
74
−
6
x
=
−80
÷
(
−8
)
x
=
10
(5)
−9
x
＋
8
＋
3
x
=
−2
x
−
16
−9
x
＋
3
x
＋
2
x
=
−16
−
8
x
=
−24
÷
(
−4
)
x
=
6
(6)
8
x
＋
3
=
−5
x
−
57
＋
x
8
x
＋
5
x
−
x
=
−57
−
3
x
=
−60
÷
12
x
=
−5
(7)
2
x
−
10
＋
x
=
−5
x
＋
6
2
x
＋
x
＋
5
x
=
6
＋
10
x
=
16
÷
8
x
=
2
(8)
−4
x
−
3
＋
9
x
=
7
x
＋
9
−4
x
＋
9
x
−
7
x
=
9
＋
3
x
=
12
÷
(
−2
)
x
=
−6
(9)
2
＋
5
x
=
8
x
−
5
x
＋
8
5
x
−
8
x
＋
5
x
=
8
−
2
x
=
6
÷
2
x
=
3
(10)
8
x
＋
2
x
＋
8
=
−5
x
＋
158
8
x
＋
2
x
＋
5
x
=
158
−
8
x
=
150
÷
15
x
=
10
(11)
−10
＋
4
x
−
5
x
=
7
x
−
66
4
x
−
5
x
−
7
x
=
−66
＋
10
x
=
−56
÷
(
−8
)
x
=
7
(12)
9
x
＋
1
=
−7
x
＋
9
x
＋
71
9
x
＋
7
x
−
9
x
=
71
−
1
x
=
70
÷
7
x
=
10
(13)
10
x
＋
3
＋
5
x
=
−2
x
−
14
10
x
＋
5
x
＋
2
x
=
−
14
−
3
x
=
−17
÷
17
x
=
−1
(14)
−8
x
＋
1
=
2
x
−
2
x
＋
49
−8
x
−
2
x
＋
2
x
=
49
−
1
x
=
48
÷
(
−8
)
x
=
−6