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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)
5
13
−
(
−1.7
x
+
0.1
)
=
−
4
2
(2)
1
13
−
(
−8
x
+
5
)
=
−
2
2
(3)
−8
(
1.9
x
+
3
)
=
6.4
(4)
4
18
−2
(
−
x
−
0.4
)
=
5
5
(5)
−8
(
−
x
+
7
)
=
−40.8
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
5
13
−
(
−1.7
x
+
0.1
)
=
−
4
2
17
1
x
−
8
8
13
=
−
2
17
x
8
13
1
=
−
+
2
8
x
=
−3
(2)
1
13
−
(
−8
x
+
5
)
=
−
2
2
5
4
x
−
2
13
=
−
2
4
x
13
5
=
−
+
2
2
x
=
−1
(3)
−8
(
1.9
x
+
3
)
=
6.4
−15.2
x
−
24
=
6.4
−15.2
x
=
6.4
+
24
x
=
−2
(4)
4
18
−2
(
−
x
−
0.4
)
=
5
5
8
x
+
0.8
5
18
=
5
8
x
5
18
=
−
0.8
5
x
7
=
4
(5)
−8
(
−
x
+
7
)
=
−40.8
8
x
−
56
=
−40.8
8
x
=
−40.8
+
56
x
=
1.9