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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
[0E3-00]
(1)
10
x
＋
8
=
−91
−
x
(2)
−6
x
＋
2
=
−5
x
(3)
−5
x
−
1
=
104
＋
10
x
(4)
4
x
−
2
=
−5
x
−
29
(5)
−10
x
＋
2
=
−2
x
−
30
(6)
−3
x
＋
3
=
5
x
＋
27
(7)
6
x
−
6
=
34
−
4
x
(8)
3
x
−
3
=
8
x
−
43
(9)
3
x
−
2
=
−6
x
−
29
(10)
−10
x
＋
8
=
3
x
−
5
(11)
−10
x
−
1
=
−9
x
＋
5
(12)
2
−
5
x
=
12
−
4
x
(13)
−1
−
2
x
=
−45
＋
9
x
(14)
3
x
−
9
=
3
＋
x
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
10
x
＋
8
=
−91
−
x
10
x
＋
x
=
−91
−
8
x
=
−99
÷
11
x
=
−9
(2)
−6
x
＋
2
=
−5
x
−6
x
＋
5
x
=
−
2
x
=
−2
÷
(
−1
)
x
=
2
(3)
−5
x
−
1
=
104
＋
10
x
−5
x
−
10
x
=
104
＋
1
x
=
105
÷
(
−15
)
x
=
−7
(4)
4
x
−
2
=
−5
x
−
29
4
x
＋
5
x
=
−29
＋
2
x
=
−27
÷
9
x
=
−3
(5)
−10
x
＋
2
=
−2
x
−
30
−10
x
＋
2
x
=
−30
−
2
x
=
−32
÷
(
−8
)
x
=
4
(6)
−3
x
＋
3
=
5
x
＋
27
−3
x
−
5
x
=
27
−
3
x
=
24
÷
(
−8
)
x
=
−3
(7)
6
x
−
6
=
34
−
4
x
6
x
＋
4
x
=
34
＋
6
x
=
40
÷
10
x
=
4
(8)
3
x
−
3
=
8
x
−
43
3
x
−
8
x
=
−43
＋
3
x
=
−40
÷
(
−5
)
x
=
8
(9)
3
x
−
2
=
−6
x
−
29
3
x
＋
6
x
=
−29
＋
2
x
=
−27
÷
9
x
=
−3
(10)
−10
x
＋
8
=
3
x
−
5
−10
x
−
3
x
=
−5
−
8
x
=
−13
÷
(
−13
)
x
=
1
(11)
−10
x
−
1
=
−9
x
＋
5
−10
x
＋
9
x
=
5
＋
1
x
=
6
÷
(
−1
)
x
=
−6
(12)
2
−
5
x
=
12
−
4
x
−
5
x
＋
4
x
=
12
−
2
x
=
10
÷
(
−1
)
x
=
−10
(13)
−1
−
2
x
=
−45
＋
9
x
−2
x
−
9
x
=
−45
＋
1
x
=
−44
÷
(
−11
)
x
=
4
(14)
3
x
−
9
=
3
＋
x
3
x
−
x
=
3
＋
9
x
=
12
÷
2
x
=
6