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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)
8
x
＋
126
=
−6
x
(2)
2
x
＋
28
=
−2
x
(3)
−8
x
＋
32
=
−4
x
(4)
−3
＋
4
x
=
−35
(5)
−20
＋
7
x
=
9
x
(6)
−8
x
＋
(
−7
)
=
−63
(7)
−9
x
−
(
−3
)
=
66
(8)
49
−
x
=
6
x
(9)
−9
x
＋
85
=
8
x
(10)
25
＋
8
x
=
3
x
(11)
−6
x
＋
96
=
10
x
(12)
2
x
＋
(
−7
)
=
−17
(13)
−
x
＋
6
=
1
(14)
−3
＋
(
−9
)
x
=
−30
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
8
x
＋
126
=
−6
x
8
x
＋
6
x
=
−
126
14
x
=
−126
x
=
−9
(2)
2
x
＋
28
=
−2
x
2
x
＋
2
x
=
−
28
4
x
=
−28
x
=
−7
(3)
−8
x
＋
32
=
−4
x
−8
x
＋
4
x
=
−
32
−4
x
=
−32
x
=
8
(4)
−3
＋
4
x
=
−35
4
x
=
−35
＋
3
4
x
=
−32
x
=
−8
(5)
−20
＋
7
x
=
9
x
7
x
−
9
x
=
20
−2
x
=
20
x
=
−10
(6)
−8
x
＋
(
−7
)
=
−63
−8
x
=
−63
＋
7
−8
x
=
−56
x
=
7
(7)
−9
x
−
(
−3
)
=
66
−9
x
=
66
−
3
−9
x
=
63
x
=
−7
(8)
49
−
x
=
6
x
−
x
−
6
x
=
−
49
−7
x
=
−49
x
=
7
(9)
−9
x
＋
85
=
8
x
−9
x
−
8
x
=
−
85
−17
x
=
−85
x
=
5
(10)
25
＋
8
x
=
3
x
8
x
−
3
x
=
−
25
5
x
=
−25
x
=
−5
(11)
−6
x
＋
96
=
10
x
−6
x
−
10
x
=
−
96
−16
x
=
−96
x
=
6
(12)
2
x
＋
(
−7
)
=
−17
2
x
=
−17
＋
7
2
x
=
−10
x
=
−5
(13)
−
x
＋
6
=
1
−
x
=
1
−
6
−
x
=
−5
x
=
5
(14)
−3
＋
(
−9
)
x
=
−30
−9
x
=
−30
＋
3
−9
x
=
−27
x
=
3