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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
[0E4-00]
(1)
7
x
+
8
+
7
x
=
9
x
+
48
(2)
6
x
+
5
x
−
7
=
6
x
+
8
(3)
7
x
−
9
=
−5
x
+
27
+
8
x
(4)
5
x
+
1
+
x
=
−
x
+
71
(5)
4
x
+
9
x
+
8
=
5
x
−
16
(6)
9
+
8
x
=
−8
x
+
6
x
−
21
(7)
5
x
+
2
=
4
x
+
26
+
4
x
(8)
6
x
+
4
=
−3
x
+
x
−
20
(9)
−6
x
+
10
x
−
3
=
5
x
+
7
(10)
4
−
7
x
−
8
x
=
5
x
+
104
(11)
2
x
+
9
x
+
5
=
−4
x
−
115
(12)
10
x
−
8
x
−
7
=
−3
x
−
2
(13)
7
x
+
9
+
7
x
=
−
x
−
111
(14)
5
−
5
x
+
10
x
=
−2
x
−
30
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
7
x
+
8
+
7
x
=
9
x
+
48
7
x
+
7
x
−
9
x
=
48
−
8
x
=
40
÷
5
x
=
8
(2)
6
x
+
5
x
−
7
=
6
x
+
8
6
x
+
5
x
−
6
x
=
8
+
7
x
=
15
÷
5
x
=
3
(3)
7
x
−
9
=
−5
x
+
27
+
8
x
7
x
+
5
x
−
8
x
=
27
+
9
x
=
36
÷
4
x
=
9
(4)
5
x
+
1
+
x
=
−
x
+
71
5
x
+
x
+
x
=
71
−
1
x
=
70
÷
7
x
=
10
(5)
4
x
+
9
x
+
8
=
5
x
−
16
4
x
+
9
x
−
5
x
=
−16
−
8
x
=
−24
÷
8
x
=
−3
(6)
9
+
8
x
=
−8
x
+
6
x
−
21
8
x
+
8
x
−
6
x
=
−21
−
9
x
=
−30
÷
10
x
=
−3
(7)
5
x
+
2
=
4
x
+
26
+
4
x
5
x
−
4
x
−
4
x
=
26
−
2
x
=
24
÷
(
−3
)
x
=
−8
(8)
6
x
+
4
=
−3
x
+
x
−
20
6
x
+
3
x
−
x
=
−
20
−
4
x
=
−24
÷
8
x
=
−3
(9)
−6
x
+
10
x
−
3
=
5
x
+
7
−6
x
+
10
x
−
5
x
=
7
+
3
x
=
10
÷
(
−1
)
x
=
−10
(10)
4
−
7
x
−
8
x
=
5
x
+
104
−7
x
−
8
x
−
5
x
=
104
−
4
x
=
100
÷
(
−20
)
x
=
−5
(11)
2
x
+
9
x
+
5
=
−4
x
−
115
2
x
+
9
x
+
4
x
=
−115
−
5
x
=
−120
÷
15
x
=
−8
(12)
10
x
−
8
x
−
7
=
−3
x
−
2
10
x
−
8
x
+
3
x
=
−
2
+
7
x
=
5
÷
5
x
=
1
(13)
7
x
+
9
+
7
x
=
−
x
−
111
7
x
+
7
x
+
x
=
−111
−
9
x
=
−120
÷
15
x
=
−8
(14)
5
−
5
x
+
10
x
=
−2
x
−
30
−5
x
+
10
x
+
2
x
=
−30
−
5
x
=
−35
÷
7
x
=
−5