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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)
−7
x
−
9
=
−4
x
−
9
x
＋
21
(2)
−6
x
−
5
=
−7
x
−
17
＋
7
x
(3)
−4
−
4
x
=
6
x
−
7
x
＋
23
(4)
2
＋
3
x
=
−3
x
＋
7
x
＋
6
(5)
10
x
＋
1
=
−7
x
＋
7
x
−
69
(6)
10
−
8
x
=
−8
x
＋
3
x
−
8
(7)
5
x
−
10
＋
7
x
=
2
x
＋
20
(8)
−3
x
＋
2
x
＋
6
=
2
x
＋
15
(9)
4
x
＋
3
=
3
x
＋
12
＋
2
x
(10)
7
＋
4
x
＋
7
x
=
−4
x
＋
97
(11)
−4
x
＋
6
＋
7
x
=
9
x
＋
30
(12)
−9
＋
8
x
−
7
x
=
2
x
＋
1
(13)
4
x
＋
6
=
−8
x
＋
7
x
＋
16
(14)
10
x
−
7
−
5
x
=
3
x
＋
9
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−7
x
−
9
=
−4
x
−
9
x
＋
21
−7
x
＋
4
x
＋
9
x
=
21
＋
9
x
=
30
÷
6
x
=
5
(2)
−6
x
−
5
=
−7
x
−
17
＋
7
x
−6
x
＋
7
x
−
7
x
=
−
17
＋
5
x
=
−12
÷
(
−6
)
x
=
2
(3)
−4
−
4
x
=
6
x
−
7
x
＋
23
−4
x
−
6
x
＋
7
x
=
23
＋
4
x
=
27
÷
(
−3
)
x
=
−9
(4)
2
＋
3
x
=
−3
x
＋
7
x
＋
6
3
x
＋
3
x
−
7
x
=
6
−
2
x
=
4
÷
(
−1
)
x
=
−4
(5)
10
x
＋
1
=
−7
x
＋
7
x
−
69
10
x
＋
7
x
−
7
x
=
−69
−
1
x
=
−70
÷
10
x
=
−7
(6)
10
−
8
x
=
−8
x
＋
3
x
−
8
−8
x
＋
8
x
−
3
x
=
−8
−
10
x
=
−18
÷
(
−3
)
x
=
6
(7)
5
x
−
10
＋
7
x
=
2
x
＋
20
5
x
＋
7
x
−
2
x
=
20
＋
10
x
=
30
÷
10
x
=
3
(8)
−3
x
＋
2
x
＋
6
=
2
x
＋
15
−3
x
＋
2
x
−
2
x
=
15
−
6
x
=
9
÷
(
−3
)
x
=
−3
(9)
4
x
＋
3
=
3
x
＋
12
＋
2
x
4
x
−
3
x
−
2
x
=
12
−
3
x
=
9
÷
(
−1
)
x
=
−9
(10)
7
＋
4
x
＋
7
x
=
−4
x
＋
97
4
x
＋
7
x
＋
4
x
=
97
−
7
x
=
90
÷
15
x
=
6
(11)
−4
x
＋
6
＋
7
x
=
9
x
＋
30
−4
x
＋
7
x
−
9
x
=
30
−
6
x
=
24
÷
(
−6
)
x
=
−4
(12)
−9
＋
8
x
−
7
x
=
2
x
＋
1
8
x
−
7
x
−
2
x
=
1
＋
9
x
=
10
÷
(
−1
)
x
=
−10
(13)
4
x
＋
6
=
−8
x
＋
7
x
＋
16
4
x
＋
8
x
−
7
x
=
16
−
6
x
=
10
÷
5
x
=
2
(14)
10
x
−
7
−
5
x
=
3
x
＋
9
10
x
−
5
x
−
3
x
=
9
＋
7
x
=
16
÷
2
x
=
8