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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
[0E5-30]
(1)
1
513
4
(
−10
x
−
)
=
4
7
(2)
126
−1.4
(
6
x
+
9
)
=
−
5
(3)
−3
(
−8
x
+
3
)
=
23
(4)
4
10
(
4
x
+
)
=
−152
5
(5)
1
(
3
x
−
7
)
=
−1
6
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
1
513
4
(
−10
x
−
)
=
4
7
−40
x
−
1
513
=
7
−40
x
513
=
+
1
7
x
13
=
−
7
(2)
126
−1.4
(
6
x
+
9
)
=
−
5
−8.4
x
−
12.6
126
=
−
5
−8.4
x
126
=
−
+
12.6
5
x
3
=
2
(3)
−3
(
−8
x
+
3
)
=
23
24
x
−
9
=
23
24
x
=
23
+
9
x
4
=
3
(4)
4
10
(
4
x
+
)
=
−152
5
40
x
+
8
=
−152
40
x
=
−152
−
8
x
=
−4
(5)
1
(
3
x
−
7
)
=
−1
6
1
7
x
−
2
6
=
−1
1
x
2
7
=
−1
+
6
x
1
=
3