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©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の比例式を解きなさい
[0G0-00]
(1)
−6
:
10
=
x
:
5
(2)
4
:
x
=
−4
:
−5
(3)
4
:
−4
=
x
:
4
(4)
−6
:
2
=
−9
:
x
(5)
3
:
1
=
12
:
x
(6)
6
:
−3
=
x
:
2
(7)
−2
:
−4
=
1
:
x
(8)
1
:
−1
=
2
:
x
(9)
8
:
−12
=
2
:
x
(10)
9
:
−6
=
−3
:
x
(11)
x
:
15
=
2
:
3
(12)
2
:
10
=
x
:
−5
(13)
1
:
2
=
x
:
−4
(14)
x
:
3
=
2
:
−2
(15)
4
:
x
=
16
:
−4
(16)
x
:
−4
=
−3
:
4
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−6
:
10
=
x
:
5
10
x
=
−6
×
5
x
=
−3
(2)
4
:
x
=
−4
:
−5
−4
x
=
4
×
(
−5
)
x
=
5
(3)
4
:
−4
=
x
:
4
−4
x
=
4
×
4
x
=
−4
(4)
−6
:
2
=
−9
:
x
−6
x
=
2
×
(
−9
)
x
=
3
(5)
3
:
1
=
12
:
x
3
x
=
12
x
=
4
(6)
6
:
−3
=
x
:
2
−3
x
=
6
×
2
x
=
−4
(7)
−2
:
−4
=
1
:
x
−2
x
=
−4
x
=
2
(8)
1
:
−1
=
2
:
x
x
=
−
2
x
=
−2
(9)
8
:
−12
=
2
:
x
8
x
=
−12
×
2
x
=
−3
(10)
9
:
−6
=
−3
:
x
9
x
=
−6
×
(
−3
)
x
=
2
(11)
x
:
15
=
2
:
3
3
x
=
15
×
2
x
=
10
(12)
2
:
10
=
x
:
−5
10
x
=
2
×
(
−5
)
x
=
−1
(13)
1
:
2
=
x
:
−4
2
x
=
−4
x
=
−2
(14)
x
:
3
=
2
:
−2
−2
x
=
3
×
2
x
=
−3
(15)
4
:
x
=
16
:
−4
16
x
=
4
×
(
−4
)
x
=
−1
(16)
x
:
−4
=
−3
:
4
4
x
=
−4
×
(
−3
)
x
=
3