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©2025 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
−
3
=
−21
−
5
x
(2)
6
−
3
x
=
−4
x
−
3
(3)
3
＋
6
x
=
24
＋
3
x
(4)
−6
x
＋
2
=
x
＋
16
(5)
7
x
−
3
=
8
x
−
10
(6)
−4
x
＋
2
=
56
＋
2
x
(7)
−7
x
−
5
=
39
＋
4
x
(8)
9
x
＋
1
=
6
x
−
23
(9)
−1
＋
9
x
=
5
x
＋
39
(10)
−10
−
10
x
=
3
x
＋
42
(11)
−1
−
3
x
=
7
x
−
71
(12)
−10
−
8
x
=
98
＋
4
x
(13)
5
＋
7
x
=
−5
＋
9
x
(14)
−
x
−
4
=
−6
x
＋
46
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
−7
x
−
3
=
−21
−
5
x
−7
x
＋
5
x
=
−21
＋
3
x
=
−18
÷
(
−2
)
x
=
9
(2)
6
−
3
x
=
−4
x
−
3
−3
x
＋
4
x
=
−3
−
6
x
=
−9
÷
1
x
=
−9
(3)
3
＋
6
x
=
24
＋
3
x
6
x
−
3
x
=
24
−
3
x
=
21
÷
3
x
=
7
(4)
−6
x
＋
2
=
x
＋
16
−6
x
−
x
=
16
−
2
x
=
14
÷
(
−7
)
x
=
−2
(5)
7
x
−
3
=
8
x
−
10
7
x
−
8
x
=
−
10
＋
3
x
=
−7
÷
(
−1
)
x
=
7
(6)
−4
x
＋
2
=
56
＋
2
x
−4
x
−
2
x
=
56
−
2
x
=
54
÷
(
−6
)
x
=
−9
(7)
−7
x
−
5
=
39
＋
4
x
−7
x
−
4
x
=
39
＋
5
x
=
44
÷
(
−11
)
x
=
−4
(8)
9
x
＋
1
=
6
x
−
23
9
x
−
6
x
=
−
23
−
1
x
=
−24
÷
3
x
=
−8
(9)
−1
＋
9
x
=
5
x
＋
39
9
x
−
5
x
=
39
＋
1
x
=
40
÷
4
x
=
10
(10)
−10
−
10
x
=
3
x
＋
42
−
10
x
−
3
x
=
42
＋
10
x
=
52
÷
(
−13
)
x
=
−4
(11)
−1
−
3
x
=
7
x
−
71
−3
x
−
7
x
=
−
71
＋
1
x
=
−70
÷
(
−10
)
x
=
7
(12)
−10
−
8
x
=
98
＋
4
x
−
8
x
−
4
x
=
98
＋
10
x
=
108
÷
(
−12
)
x
=
−9
(13)
5
＋
7
x
=
−5
＋
9
x
7
x
−
9
x
=
−5
−
5
x
=
−10
÷
(
−2
)
x
=
5
(14)
−
x
−
4
=
−6
x
＋
46
−
x
＋
6
x
=
46
＋
4
x
=
50
÷
5
x
=
10