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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[0E2-00]
(1)
−9
x
−
6
=
75
(2)
−8
x
＋
(
−6
)
=
−38
(3)
10
x
＋
10
=
−40
(4)
−3
x
−
(
−30
)
=
−9
x
(5)
7
−
4
x
=
−17
(6)
9
x
−
(
−2
)
=
8
x
(7)
3
−
3
x
=
9
(8)
9
−
10
x
=
89
(9)
10
−
(
−2
)
x
=
30
(10)
21
＋
8
x
=
5
x
(11)
−8
−
(
−3
)
x
=
7
(12)
−9
＋
2
x
=
3
x
(13)
−9
x
−
6
=
−15
(14)
−5
−
(
−6
)
x
=
13
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−9
x
−
6
=
75
−9
x
=
75
＋
6
−9
x
=
81
x
=
−9
(2)
−8
x
＋
(
−6
)
=
−38
−8
x
=
−38
＋
6
−8
x
=
−32
x
=
4
(3)
10
x
＋
10
=
−40
10
x
=
−40
−
10
10
x
=
−50
x
=
−5
(4)
−3
x
−
(
−30
)
=
−9
x
−3
x
＋
9
x
=
−30
6
x
=
−30
x
=
−5
(5)
7
−
4
x
=
−17
−
4
x
=
−17
−
7
−
4
x
=
−24
x
=
6
(6)
9
x
−
(
−2
)
=
8
x
9
x
−
8
x
=
−2
x
=
−2
(7)
3
−
3
x
=
9
−
3
x
=
9
−
3
−
3
x
=
6
x
=
−2
(8)
9
−
10
x
=
89
−
10
x
=
89
−
9
−
10
x
=
80
x
=
−8
(9)
10
−
(
−2
)
x
=
30
2
x
=
30
−
10
2
x
=
20
x
=
10
(10)
21
＋
8
x
=
5
x
8
x
−
5
x
=
−
21
3
x
=
−21
x
=
−7
(11)
−8
−
(
−3
)
x
=
7
3
x
=
7
＋
8
3
x
=
15
x
=
5
(12)
−9
＋
2
x
=
3
x
2
x
−
3
x
=
9
−
x
=
9
x
=
−9
(13)
−9
x
−
6
=
−15
−9
x
=
−15
＋
6
−9
x
=
−9
x
=
1
(14)
−5
−
(
−6
)
x
=
13
6
x
=
13
＋
5
6
x
=
18
x
=
3