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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)
−7
x
−
5
=
51
＋
7
x
(2)
10
x
＋
9
=
23
−
4
x
(3)
7
＋
4
x
=
−57
−
4
x
(4)
9
x
−
5
=
−5
x
＋
51
(5)
−4
x
−
8
=
−24
−
8
x
(6)
−6
x
−
10
=
−40
＋
9
x
(7)
−10
−
4
x
=
2
x
−
58
(8)
−3
x
＋
5
=
−
x
−
7
(9)
−5
＋
3
x
=
−35
−
3
x
(10)
−8
x
−
4
=
−5
x
−
19
(11)
−
x
−
5
=
9
x
−
75
(12)
−10
x
−
5
=
−15
−
8
x
(13)
6
x
＋
9
=
1
＋
7
x
(14)
−1
＋
10
x
=
−
x
−
56
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−7
x
−
5
=
51
＋
7
x
−7
x
−
7
x
=
51
＋
5
x
=
56
÷
(
−14
)
x
=
−4
(2)
10
x
＋
9
=
23
−
4
x
10
x
＋
4
x
=
23
−
9
x
=
14
÷
14
x
=
1
(3)
7
＋
4
x
=
−57
−
4
x
4
x
＋
4
x
=
−57
−
7
x
=
−64
÷
8
x
=
−8
(4)
9
x
−
5
=
−5
x
＋
51
9
x
＋
5
x
=
51
＋
5
x
=
56
÷
14
x
=
4
(5)
−4
x
−
8
=
−24
−
8
x
−4
x
＋
8
x
=
−24
＋
8
x
=
−16
÷
4
x
=
−4
(6)
−6
x
−
10
=
−40
＋
9
x
−6
x
−
9
x
=
−40
＋
10
x
=
−30
÷
(
−15
)
x
=
2
(7)
−10
−
4
x
=
2
x
−
58
−4
x
−
2
x
=
−
58
＋
10
x
=
−48
÷
(
−6
)
x
=
8
(8)
−3
x
＋
5
=
−
x
−
7
−3
x
＋
x
=
−7
−
5
x
=
−12
÷
(
−2
)
x
=
6
(9)
−5
＋
3
x
=
−35
−
3
x
3
x
＋
3
x
=
−35
＋
5
x
=
−30
÷
6
x
=
−5
(10)
−8
x
−
4
=
−5
x
−
19
−8
x
＋
5
x
=
−19
＋
4
x
=
−15
÷
(
−3
)
x
=
5
(11)
−
x
−
5
=
9
x
−
75
−
x
−
9
x
=
−75
＋
5
x
=
−70
÷
(
−10
)
x
=
7
(12)
−10
x
−
5
=
−15
−
8
x
−10
x
＋
8
x
=
−15
＋
5
x
=
−10
÷
(
−2
)
x
=
5
(13)
6
x
＋
9
=
1
＋
7
x
6
x
−
7
x
=
1
−
9
x
=
−8
÷
(
−1
)
x
=
8
(14)
−1
＋
10
x
=
−
x
−
56
10
x
＋
x
=
−
56
＋
1
x
=
−55
÷
11
x
=
−5