[文字サイズの変更]
▼
▲
©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
4
(
6
x
+
2
)
=
3
3
(2)
7
161
(
9
x
−
4
)
=
−
4
5
(3)
−9
(
5
x
+
4
)
=
−58.5
(4)
−2
(
−5
x
+
0.7
)
=
−51.4
(5)
2
2
1
4
−
(
x
+
)
=
3
3
2
9
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
5
4
(
6
x
+
2
)
=
3
3
10
10
x
+
3
4
=
3
10
x
4
10
=
−
3
3
x
1
=
−
5
(2)
7
161
(
9
x
−
4
)
=
−
4
5
63
x
−
7
4
161
=
−
5
63
x
4
161
=
−
+
7
5
x
8
=
−
5
(3)
−9
(
5
x
+
4
)
=
−58.5
−45
x
−
36
=
−58.5
−45
x
=
−58.5
+
36
x
=
0.5
(4)
−2
(
−5
x
+
0.7
)
=
−51.4
10
x
−
1.4
=
−51.4
10
x
=
−51.4
+
1.4
x
=
−5
(5)
2
2
1
4
−
(
x
+
)
=
3
3
2
9
4
1
−
x
−
9
3
4
=
9
4
−
x
9
4
1
=
+
9
3
x
7
=
−
4