[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)
4
101
−1.8
(
x
−
9
)
=
3
5
(2)
−8
(
−3
x
+
9
)
=
−48
(3)
2
(
−1.2
x
−
1
)
=
−23.6
(4)
10
(
−6
x
+
4
)
=
280
(5)
10
9
(
x
+
)
=
73
9
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
4
101
−1.8
(
x
−
9
)
=
3
5
12
−
x
+
16.2
5
101
=
5
12
−
x
5
101
=
−
16.2
5
x
5
=
−
3
(2)
−8
(
−3
x
+
9
)
=
−48
24
x
−
72
=
−48
24
x
=
−48
+
72
x
=
1
(3)
2
(
−1.2
x
−
1
)
=
−23.6
−2.4
x
−
2
=
−23.6
−2.4
x
=
−23.6
+
2
x
=
9
(4)
10
(
−6
x
+
4
)
=
280
−60
x
+
40
=
280
−60
x
=
280
−
40
x
=
−4
(5)
10
9
(
x
+
)
=
73
9
9
x
+
10
=
73
9
x
=
73
−
10
x
=
7