[文字サイズの変更]
▼
▲
©2025 数学クラブ http://sugaku.club/
月 日( )
● 次の比例式を解きなさい
[0G1-00]
(1)
−36
:
−3
x
=
−4
:
−3
(2)
−4
x
:
−16
=
3
:
−2
(3)
−5
:
15
=
−8
:
−2
x
(4)
−5
:
−4
=
−4
x
:
32
(5)
4
x
:
−8
=
−3
:
3
(6)
x
−
1
:
2
=
12
:
−8
(7)
−5
:
x
−
1
=
5
:
1
(8)
5
:
4
=
10
:
x
−
4
(9)
5
x
:
−10
=
2
:
−4
(10)
1
:
2
=
3
x
:
12
(11)
8
:
−4
=
−3
x
:
15
(12)
−12
:
x
−
5
=
8
:
−2
(13)
x
+
3
:
−3
=
−4
:
4
(14)
10
:
−8
=
x
+
4
:
4
(15)
−1
:
2
=
2
x
:
−12
(16)
−3
:
9
=
6
:
−3
x
©2025 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−36
:
−3
x
=
−4
:
−3
−4
×
(
−3
)
x
=
−36
×
(
−3
)
x
=
9
(2)
−4
x
:
−16
=
3
:
−2
−2
×
(
−4
)
x
=
−16
×
3
x
=
−6
(3)
−5
:
15
=
−8
:
−2
x
−5
×
(
−2
)
x
=
15
×
(
−8
)
x
=
−12
(4)
−5
:
−4
=
−4
x
:
32
−4
×
(
−4
)
x
=
−5
×
32
x
=
−10
(5)
4
x
:
−8
=
−3
:
3
3
×
4
x
=
−8
×
(
−3
)
x
=
2
(6)
x
−
1
:
2
=
12
:
−8
−8
×
(
x
−
1
)
=
2
×
12
x
−
1
=
−3
x
=
−2
(7)
−5
:
x
−
1
=
5
:
1
5
×
(
x
−
1
)
=
−5
x
−
1
=
−1
x
=
0
(8)
5
:
4
=
10
:
x
−
4
5
×
(
x
−
4
)
=
4
×
10
x
−
4
=
8
x
=
12
(9)
5
x
:
−10
=
2
:
−4
−4
×
5
x
=
−10
×
2
x
=
1
(10)
1
:
2
=
3
x
:
12
2
×
3
x
=
12
x
=
2
(11)
8
:
−4
=
−3
x
:
15
−4
×
(
−3
)
x
=
8
×
15
x
=
10
(12)
−12
:
x
−
5
=
8
:
−2
8
×
(
x
−
5
)
=
−12
×
(
−2
)
x
−
5
=
3
x
=
8
(13)
x
+
3
:
−3
=
−4
:
4
4
×
(
x
+
3
)
=
−3
×
(
−4
)
x
+
3
=
3
x
=
0
(14)
10
:
−8
=
x
+
4
:
4
−8
×
(
x
+
4
)
=
10
×
4
x
+
4
=
−5
x
=
−9
(15)
−1
:
2
=
2
x
:
−12
2
×
2
x
=
−
(
−12
)
x
=
3
(16)
−3
:
9
=
6
:
−3
x
−3
×
(
−3
)
x
=
9
×
6
x
=
6