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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
[0E2-00]
(1)
−45
−
9
x
=
−4
x
(2)
2
x
＋
(
−4
)
=
6
(3)
−8
x
−
(
−45
)
=
−3
x
(4)
−54
−
(
−4
)
x
=
−5
x
(5)
4
x
−
(
−5
)
=
21
(6)
6
x
−
80
=
−4
x
(7)
−10
＋
(
−8
)
x
=
−2
(8)
−130
−
(
−4
)
x
=
−9
x
(9)
−10
＋
10
x
=
30
(10)
64
＋
9
x
=
x
(11)
10
x
＋
(
−2
)
=
68
(12)
−2
x
＋
(
−110
)
=
9
x
(13)
−5
＋
(
−9
)
x
=
−8
x
(14)
10
＋
7
x
=
17
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−45
−
9
x
=
−4
x
−
9
x
＋
4
x
=
45
−5
x
=
45
x
=
−9
(2)
2
x
＋
(
−4
)
=
6
2
x
=
6
＋
4
2
x
=
10
x
=
5
(3)
−8
x
−
(
−45
)
=
−3
x
−8
x
＋
3
x
=
−45
−5
x
=
−45
x
=
9
(4)
−54
−
(
−4
)
x
=
−5
x
4
x
＋
5
x
=
54
9
x
=
54
x
=
6
(5)
4
x
−
(
−5
)
=
21
4
x
=
21
−
5
4
x
=
16
x
=
4
(6)
6
x
−
80
=
−4
x
6
x
＋
4
x
=
80
10
x
=
80
x
=
8
(7)
−10
＋
(
−8
)
x
=
−2
−8
x
=
−2
＋
10
−8
x
=
8
x
=
−1
(8)
−130
−
(
−4
)
x
=
−9
x
4
x
＋
9
x
=
130
13
x
=
130
x
=
10
(9)
−10
＋
10
x
=
30
10
x
=
30
＋
10
10
x
=
40
x
=
4
(10)
64
＋
9
x
=
x
9
x
−
x
=
−
64
8
x
=
−64
x
=
−8
(11)
10
x
＋
(
−2
)
=
68
10
x
=
68
＋
2
10
x
=
70
x
=
7
(12)
−2
x
＋
(
−110
)
=
9
x
−2
x
−
9
x
=
110
−11
x
=
110
x
=
−10
(13)
−5
＋
(
−9
)
x
=
−8
x
−9
x
＋
8
x
=
5
−
x
=
5
x
=
−5
(14)
10
＋
7
x
=
17
7
x
=
17
−
10
7
x
=
7
x
=
1