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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)
10
＋
2
x
=
6
(2)
−6
−
(
−9
)
x
=
−69
(3)
126
＋
7
x
=
−7
x
(4)
5
x
−
(
−10
)
=
5
(5)
−
x
−
(
−5
)
=
−4
(6)
−3
x
−
9
=
−30
(7)
−70
＋
4
x
=
−10
x
(8)
−21
＋
(
−2
)
x
=
−9
x
(9)
5
x
−
(
−8
)
=
−32
(10)
5
＋
3
x
=
32
(11)
−3
x
＋
6
=
−6
x
(12)
−18
−
(
−4
)
x
=
x
(13)
6
x
−
(
−8
)
=
8
x
(14)
−8
x
＋
9
=
x
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
10
＋
2
x
=
6
2
x
=
6
−
10
2
x
=
−4
x
=
−2
(2)
−6
−
(
−9
)
x
=
−69
9
x
=
−69
＋
6
9
x
=
−63
x
=
−7
(3)
126
＋
7
x
=
−7
x
7
x
＋
7
x
=
−
126
14
x
=
−126
x
=
−9
(4)
5
x
−
(
−10
)
=
5
5
x
=
5
−
10
5
x
=
−5
x
=
−1
(5)
−
x
−
(
−5
)
=
−4
−
x
=
−4
−
5
−
x
=
−9
x
=
9
(6)
−3
x
−
9
=
−30
−3
x
=
−30
＋
9
−3
x
=
−21
x
=
7
(7)
−70
＋
4
x
=
−10
x
4
x
＋
10
x
=
70
14
x
=
70
x
=
5
(8)
−21
＋
(
−2
)
x
=
−9
x
−2
x
＋
9
x
=
21
7
x
=
21
x
=
3
(9)
5
x
−
(
−8
)
=
−32
5
x
=
−32
−
8
5
x
=
−40
x
=
−8
(10)
5
＋
3
x
=
32
3
x
=
32
−
5
3
x
=
27
x
=
9
(11)
−3
x
＋
6
=
−6
x
−3
x
＋
6
x
=
−
6
3
x
=
−6
x
=
−2
(12)
−18
−
(
−4
)
x
=
x
4
x
−
x
=
18
3
x
=
18
x
=
6
(13)
6
x
−
(
−8
)
=
8
x
6
x
−
8
x
=
−8
−2
x
=
−8
x
=
4
(14)
−8
x
＋
9
=
x
−8
x
−
x
=
−
9
−9
x
=
−9
x
=
1