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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
[0E5-30]
(1)
3
3
(
x
−
8
)
=
2
2
(2)
3
(
8
x
+
8
)
=
3
4
(3)
3
67
−0.5
(
−10
x
−
)
=
4
8
(4)
3
65
−5
(
x
+
6
)
=
−
2
2
(5)
1
1
0.8
(
x
+
0.6
)
=
6
3
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
3
(
x
−
8
)
=
2
2
3
x
−
12
2
3
=
2
3
x
2
3
=
+
12
2
x
=
9
(2)
3
(
8
x
+
8
)
=
3
4
6
x
+
6
=
3
6
x
=
3
−
6
x
1
=
−
2
(3)
3
67
−0.5
(
−10
x
−
)
=
4
8
3
5
x
+
8
67
=
8
5
x
67
3
=
−
8
8
x
8
=
5
(4)
3
65
−5
(
x
+
6
)
=
−
2
2
15
−
x
−
30
2
65
=
−
2
15
−
x
2
65
=
−
+
30
2
x
1
=
3
(5)
1
1
0.8
(
x
+
0.6
)
=
6
3
2
x
+
0.48
15
1
=
3
2
x
15
1
=
−
0.48
3
x
11
=
−
10