[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)
3
13
(
x
+
3
)
=
4
8
(2)
−1.5
(
4
x
−
1.3
)
=
−5.25
(3)
9
1
417
3
(
−
x
−
)
=
5
2
10
(4)
−2
(
−1.8
x
−
5
)
=
−8
(5)
1
2
(
x
−
6
)
=
−9
2
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
13
(
x
+
3
)
=
4
8
3
9
x
+
4
4
13
=
8
3
x
4
13
9
=
−
8
4
x
5
=
−
6
(2)
−1.5
(
4
x
−
1.3
)
=
−5.25
−6
x
+
1.95
=
−5.25
−6
x
=
−5.25
−
1.95
x
=
1.2
(3)
9
1
417
3
(
−
x
−
)
=
5
2
10
27
3
−
x
−
5
2
417
=
10
27
−
x
5
417
3
=
+
10
2
x
=
−8
(4)
−2
(
−1.8
x
−
5
)
=
−8
3.6
x
+
10
=
−8
3.6
x
=
−8
−
10
x
=
−5
(5)
1
2
(
x
−
6
)
=
−9
2
x
−
12
=
−9
x
=
−9
+
12
x
=
3