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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)
−5
x
−
9
x
−
7
=
3
x
+
78
(2)
−10
+
9
x
=
2
x
+
4
x
−
40
(3)
8
−
4
x
=
−2
x
−
7
x
+
48
(4)
7
x
−
2
x
+
2
=
3
x
+
10
(5)
−4
x
+
1
=
3
x
−
69
+
3
x
(6)
8
x
+
6
=
6
x
+
30
−
2
x
(7)
4
−
8
x
=
9
x
+
8
x
+
154
(8)
−6
+
9
x
+
2
x
=
−10
x
−
174
(9)
9
x
+
8
x
+
10
=
4
x
+
36
(10)
−8
x
+
3
x
+
7
=
5
x
+
87
(11)
9
x
+
10
+
9
x
=
7
x
−
23
(12)
−3
x
−
5
x
−
2
=
−6
x
+
12
(13)
4
x
−
10
+
8
x
=
−4
x
+
6
(14)
−7
+
4
x
=
−7
x
+
2
x
−
52
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−5
x
−
9
x
−
7
=
3
x
+
78
−5
x
−
9
x
−
3
x
=
78
+
7
x
=
85
÷
(
−17
)
x
=
−5
(2)
−10
+
9
x
=
2
x
+
4
x
−
40
9
x
−
2
x
−
4
x
=
−40
+
10
x
=
−30
÷
3
x
=
−10
(3)
8
−
4
x
=
−2
x
−
7
x
+
48
−4
x
+
2
x
+
7
x
=
48
−
8
x
=
40
÷
5
x
=
8
(4)
7
x
−
2
x
+
2
=
3
x
+
10
7
x
−
2
x
−
3
x
=
10
−
2
x
=
8
÷
2
x
=
4
(5)
−4
x
+
1
=
3
x
−
69
+
3
x
−4
x
−
3
x
−
3
x
=
−
69
−
1
x
=
−70
÷
(
−10
)
x
=
7
(6)
8
x
+
6
=
6
x
+
30
−
2
x
8
x
−
6
x
+
2
x
=
30
−
6
x
=
24
÷
4
x
=
6
(7)
4
−
8
x
=
9
x
+
8
x
+
154
−8
x
−
9
x
−
8
x
=
154
−
4
x
=
150
÷
(
−25
)
x
=
−6
(8)
−6
+
9
x
+
2
x
=
−10
x
−
174
9
x
+
2
x
+
10
x
=
−174
+
6
x
=
−168
÷
21
x
=
−8
(9)
9
x
+
8
x
+
10
=
4
x
+
36
9
x
+
8
x
−
4
x
=
36
−
10
x
=
26
÷
13
x
=
2
(10)
−8
x
+
3
x
+
7
=
5
x
+
87
−8
x
+
3
x
−
5
x
=
87
−
7
x
=
80
÷
(
−10
)
x
=
−8
(11)
9
x
+
10
+
9
x
=
7
x
−
23
9
x
+
9
x
−
7
x
=
−
23
−
10
x
=
−33
÷
11
x
=
−3
(12)
−3
x
−
5
x
−
2
=
−6
x
+
12
−3
x
−
5
x
+
6
x
=
12
+
2
x
=
14
÷
(
−2
)
x
=
−7
(13)
4
x
−
10
+
8
x
=
−4
x
+
6
4
x
+
8
x
+
4
x
=
6
+
10
x
=
16
÷
16
x
=
1
(14)
−7
+
4
x
=
−7
x
+
2
x
−
52
4
x
+
7
x
−
2
x
=
−
52
+
7
x
=
−45
÷
9
x
=
−5