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©2024 数学クラブ http://sugaku.club/
月 日( )
● 次の比例式を解きなさい
[0G1-00]
(1)
−6
:
4
=
x
−
4
:
2
(2)
2
:
−6
=
x
−
1
:
−3
(3)
−4
:
x
+
2
=
20
:
15
(4)
−5
:
1
=
x
−
3
:
2
(5)
5
x
:
60
=
−1
:
−3
(6)
x
−
2
:
4
=
1
:
2
(7)
4
:
−3
=
x
−
4
:
−15
(8)
x
+
5
:
−1
=
−10
:
−2
(9)
4
x
:
100
=
4
:
5
(10)
−1
:
−4
=
x
−
5
:
12
(11)
−15
:
−5
=
x
−
2
:
2
(12)
−15
:
15
=
9
:
−3
x
(13)
2
:
1
=
24
:
−4
x
(14)
−4
:
x
+
4
=
8
:
−10
(15)
−2
:
−8
=
−2
x
:
8
(16)
−3
:
3
=
−5
:
5
x
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−6
:
4
=
x
−
4
:
2
4
×
(
x
−
4
)
=
−6
×
2
x
−
4
=
−3
x
=
1
(2)
2
:
−6
=
x
−
1
:
−3
−6
×
(
x
−
1
)
=
2
×
(
−3
)
x
−
1
=
1
x
=
2
(3)
−4
:
x
+
2
=
20
:
15
20
×
(
x
+
2
)
=
−4
×
15
x
+
2
=
−3
x
=
−5
(4)
−5
:
1
=
x
−
3
:
2
x
−
3
=
−5
×
2
x
−
3
=
−10
x
=
−7
(5)
5
x
:
60
=
−1
:
−3
−3
×
5
x
=
60
×
(
−1
)
x
=
4
(6)
x
−
2
:
4
=
1
:
2
2
×
(
x
−
2
)
=
4
x
−
2
=
2
x
=
4
(7)
4
:
−3
=
x
−
4
:
−15
−3
×
(
x
−
4
)
=
4
×
(
−15
)
x
−
4
=
20
x
=
24
(8)
x
+
5
:
−1
=
−10
:
−2
−2
×
(
x
+
5
)
=
−
(
−10
)
x
+
5
=
−5
x
=
−10
(9)
4
x
:
100
=
4
:
5
5
×
4
x
=
100
×
4
x
=
20
(10)
−1
:
−4
=
x
−
5
:
12
−4
×
(
x
−
5
)
=
−
12
x
−
5
=
3
x
=
8
(11)
−15
:
−5
=
x
−
2
:
2
−5
×
(
x
−
2
)
=
−15
×
2
x
−
2
=
6
x
=
8
(12)
−15
:
15
=
9
:
−3
x
−15
×
(
−3
)
x
=
15
×
9
x
=
3
(13)
2
:
1
=
24
:
−4
x
2
×
(
−4
)
x
=
24
x
=
−3
(14)
−4
:
x
+
4
=
8
:
−10
8
×
(
x
+
4
)
=
−4
×
(
−10
)
x
+
4
=
5
x
=
1
(15)
−2
:
−8
=
−2
x
:
8
−8
×
(
−2
)
x
=
−2
×
8
x
=
−1
(16)
−3
:
3
=
−5
:
5
x
−3
×
5
x
=
3
×
(
−5
)
x
=
1