[文字サイズの変更]
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の比例式を解きなさい
[0G1-00]
(1)
−5
:
x
−
2
=
−1
:
2
(2)
4
:
3
=
−60
:
−3
x
(3)
x
+
4
:
−5
=
−3
:
−1
(4)
4
:
2
=
x
+
5
:
1
(5)
−5
:
5
=
x
+
3
:
−4
(6)
4
:
x
−
4
=
2
:
1
(7)
4
:
−4
=
−2
x
:
−32
(8)
−9
:
6
=
−4
x
:
8
(9)
4
:
3
=
8
:
x
−
4
(10)
−2
:
−4
=
1
:
x
−
3
(11)
x
+
3
:
1
=
−16
:
−4
(12)
−8
:
4
=
x
+
3
:
−5
(13)
−1
:
−4
=
−3
:
x
−
2
(14)
1
:
2
=
2
:
x
−
2
(15)
−12
:
−2
x
=
−2
:
4
(16)
15
:
3
=
−60
:
3
x
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−5
:
x
−
2
=
−1
:
2
−
(
x
−
2
)
=
−5
×
2
x
−
2
=
10
x
=
12
(2)
4
:
3
=
−60
:
−3
x
4
×
(
−3
)
x
=
3
×
(
−60
)
x
=
15
(3)
x
+
4
:
−5
=
−3
:
−1
−
(
x
+
4
)
=
−5
×
(
−3
)
x
+
4
=
−15
x
=
−19
(4)
4
:
2
=
x
+
5
:
1
2
×
(
x
+
5
)
=
4
x
+
5
=
2
x
=
−3
(5)
−5
:
5
=
x
+
3
:
−4
5
×
(
x
+
3
)
=
−5
×
(
−4
)
x
+
3
=
4
x
=
1
(6)
4
:
x
−
4
=
2
:
1
2
×
(
x
−
4
)
=
4
x
−
4
=
2
x
=
6
(7)
4
:
−4
=
−2
x
:
−32
−4
×
(
−2
)
x
=
4
×
(
−32
)
x
=
−16
(8)
−9
:
6
=
−4
x
:
8
6
×
(
−4
)
x
=
−9
×
8
x
=
3
(9)
4
:
3
=
8
:
x
−
4
4
×
(
x
−
4
)
=
3
×
8
x
−
4
=
6
x
=
10
(10)
−2
:
−4
=
1
:
x
−
3
−2
×
(
x
−
3
)
=
−4
x
−
3
=
2
x
=
5
(11)
x
+
3
:
1
=
−16
:
−4
−4
×
(
x
+
3
)
=
−16
x
+
3
=
4
x
=
1
(12)
−8
:
4
=
x
+
3
:
−5
4
×
(
x
+
3
)
=
−8
×
(
−5
)
x
+
3
=
10
x
=
7
(13)
−1
:
−4
=
−3
:
x
−
2
−
(
x
−
2
)
=
−4
×
(
−3
)
x
−
2
=
−12
x
=
−10
(14)
1
:
2
=
2
:
x
−
2
x
−
2
=
2
×
2
x
−
2
=
4
x
=
6
(15)
−12
:
−2
x
=
−2
:
4
−2
×
(
−2
)
x
=
−12
×
4
x
=
−12
(16)
15
:
3
=
−60
:
3
x
15
×
3
x
=
3
×
(
−60
)
x
=
−4