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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
[224-00]
(1)
2
3
x
=
36
x
−
108
(2)
2
3
x
+
21
x
=
24
(3)
2
3
x
=
3
x
+
168
(4)
2
3
x
−
6
x
−
189
=
0
(5)
2
3
x
=
15
x
−
12
(6)
2
2
x
=
32
x
−
126
(7)
2
3
x
−
33
x
+
90
=
0
(8)
2
3
x
=
−
15
x
+
42
(9)
2
3
x
−
39
x
+
120
=
0
(10)
2
3
x
+
18
x
=
48
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
3
x
=
36
x
−
108
2
3
(
x
−
6
)
=
0
x
=
6
(2)
2
3
x
+
21
x
=
24
3
(
x
+
8
)
(
x
−
1
)
=
0
x
=
−8
,
1
(3)
2
3
x
=
3
x
+
168
3
(
x
−
8
)
(
x
+
7
)
=
0
x
=
8
,
−7
(4)
2
3
x
−
6
x
−
189
=
0
3
(
x
−
9
)
(
x
+
7
)
=
0
x
=
9
,
−7
(5)
2
3
x
=
15
x
−
12
3
(
x
−
4
)
(
x
−
1
)
=
0
x
=
4
,
1
(6)
2
2
x
=
32
x
−
126
2
(
x
−
9
)
(
x
−
7
)
=
0
x
=
9
,
7
(7)
2
3
x
−
33
x
+
90
=
0
3
(
x
−
5
)
(
x
−
6
)
=
0
x
=
5
,
6
(8)
2
3
x
=
−
15
x
+
42
3
(
x
−
2
)
(
x
+
7
)
=
0
x
=
2
,
−7
(9)
2
3
x
−
39
x
+
120
=
0
3
(
x
−
8
)
(
x
−
5
)
=
0
x
=
8
,
5
(10)
2
3
x
+
18
x
=
48
3
(
x
−
2
)
(
x
+
8
)
=
0
x
=
2
,
−8