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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
[0E3-00]
(1)
−10
x
＋
1
=
3
x
−
25
(2)
−6
−
8
x
=
−3
x
−
11
(3)
−
x
−
9
=
−15
−
7
x
(4)
10
x
＋
10
=
2
＋
9
x
(5)
−2
＋
9
x
=
124
−
5
x
(6)
8
x
＋
3
=
3
x
−
2
(7)
3
−
4
x
=
−77
＋
4
x
(8)
4
−
10
x
=
9
x
＋
80
(9)
2
x
−
9
=
−9
x
＋
35
(10)
−5
x
＋
2
=
−96
＋
9
x
(11)
1
−
2
x
=
46
−
7
x
(12)
−3
x
＋
4
=
4
x
＋
25
(13)
−4
＋
9
x
=
32
−
9
x
(14)
−8
＋
9
x
=
2
x
−
78
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−10
x
＋
1
=
3
x
−
25
−10
x
−
3
x
=
−25
−
1
x
=
−26
÷
(
−13
)
x
=
2
(2)
−6
−
8
x
=
−3
x
−
11
−
8
x
＋
3
x
=
−11
＋
6
x
=
−5
÷
(
−5
)
x
=
1
(3)
−
x
−
9
=
−15
−
7
x
−
x
＋
7
x
=
−15
＋
9
x
=
−6
÷
6
x
=
−1
(4)
10
x
＋
10
=
2
＋
9
x
10
x
−
9
x
=
2
−
10
x
=
−8
÷
1
x
=
−8
(5)
−2
＋
9
x
=
124
−
5
x
9
x
＋
5
x
=
124
＋
2
x
=
126
÷
14
x
=
9
(6)
8
x
＋
3
=
3
x
−
2
8
x
−
3
x
=
−2
−
3
x
=
−5
÷
5
x
=
−1
(7)
3
−
4
x
=
−77
＋
4
x
−4
x
−
4
x
=
−77
−
3
x
=
−80
÷
(
−8
)
x
=
10
(8)
4
−
10
x
=
9
x
＋
80
−10
x
−
9
x
=
80
−
4
x
=
76
÷
(
−19
)
x
=
−4
(9)
2
x
−
9
=
−9
x
＋
35
2
x
＋
9
x
=
35
＋
9
x
=
44
÷
11
x
=
4
(10)
−5
x
＋
2
=
−96
＋
9
x
−5
x
−
9
x
=
−96
−
2
x
=
−98
÷
(
−14
)
x
=
7
(11)
1
−
2
x
=
46
−
7
x
−2
x
＋
7
x
=
46
−
1
x
=
45
÷
5
x
=
9
(12)
−3
x
＋
4
=
4
x
＋
25
−3
x
−
4
x
=
25
−
4
x
=
21
÷
(
−7
)
x
=
−3
(13)
−4
＋
9
x
=
32
−
9
x
9
x
＋
9
x
=
32
＋
4
x
=
36
÷
18
x
=
2
(14)
−8
＋
9
x
=
2
x
−
78
9
x
−
2
x
=
−
78
＋
8
x
=
−70
÷
7
x
=
−10