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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
[0E4-00]
(1)
2
+
7
x
=
−3
x
−
5
x
+
122
(2)
−5
x
+
10
=
10
x
−
9
x
+
22
(3)
1
−
7
x
−
4
x
=
7
x
+
109
(4)
3
x
+
9
=
−3
x
−
9
x
+
24
(5)
5
−
2
x
+
10
x
=
7
x
−
1
(6)
5
x
+
3
=
−7
x
−
67
−
2
x
(7)
9
x
−
10
x
+
10
=
2
x
+
37
(8)
−5
x
+
7
=
3
x
+
22
+
7
x
(9)
4
x
+
10
x
+
3
=
−6
x
−
177
(10)
1
+
3
x
=
4
x
−
x
+
1
(11)
8
x
+
3
=
−6
x
+
45
−
7
x
(12)
−3
x
+
10
x
+
5
=
6
x
−
3
(13)
8
x
−
4
x
−
2
=
10
x
−
14
(14)
−7
x
−
10
+
7
x
=
−2
x
+
2
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
+
7
x
=
−3
x
−
5
x
+
122
7
x
+
3
x
+
5
x
=
122
−
2
x
=
120
÷
15
x
=
8
(2)
−5
x
+
10
=
10
x
−
9
x
+
22
−5
x
−
10
x
+
9
x
=
22
−
10
x
=
12
÷
(
−6
)
x
=
−2
(3)
1
−
7
x
−
4
x
=
7
x
+
109
−7
x
−
4
x
−
7
x
=
109
−
1
x
=
108
÷
(
−18
)
x
=
−6
(4)
3
x
+
9
=
−3
x
−
9
x
+
24
3
x
+
3
x
+
9
x
=
24
−
9
x
=
15
÷
15
x
=
1
(5)
5
−
2
x
+
10
x
=
7
x
−
1
−2
x
+
10
x
−
7
x
=
−
1
−
5
x
=
−6
÷
1
x
=
−6
(6)
5
x
+
3
=
−7
x
−
67
−
2
x
5
x
+
7
x
+
2
x
=
−67
−
3
x
=
−70
÷
14
x
=
−5
(7)
9
x
−
10
x
+
10
=
2
x
+
37
9
x
−
10
x
−
2
x
=
37
−
10
x
=
27
÷
(
−3
)
x
=
−9
(8)
−5
x
+
7
=
3
x
+
22
+
7
x
−5
x
−
3
x
−
7
x
=
22
−
7
x
=
15
÷
(
−15
)
x
=
−1
(9)
4
x
+
10
x
+
3
=
−6
x
−
177
4
x
+
10
x
+
6
x
=
−177
−
3
x
=
−180
÷
20
x
=
−9
(10)
1
+
3
x
=
4
x
−
x
+
1
3
x
−
4
x
+
x
=
1
−
1
x
=
0
÷
0
x
=
NAN
(11)
8
x
+
3
=
−6
x
+
45
−
7
x
8
x
+
6
x
+
7
x
=
45
−
3
x
=
42
÷
21
x
=
2
(12)
−3
x
+
10
x
+
5
=
6
x
−
3
−3
x
+
10
x
−
6
x
=
−
3
−
5
x
=
−8
÷
1
x
=
−8
(13)
8
x
−
4
x
−
2
=
10
x
−
14
8
x
−
4
x
−
10
x
=
−
14
+
2
x
=
−12
÷
(
−6
)
x
=
2
(14)
−7
x
−
10
+
7
x
=
−2
x
+
2
−7
x
+
7
x
+
2
x
=
2
+
10
x
=
12
÷
2
x
=
6