[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)
x
−
3
:
3
=
2
:
−3
(2)
36
:
−3
x
=
12
:
3
(3)
−2
:
−4
=
x
−
5
:
2
(4)
−2
:
8
=
2
x
:
−8
(5)
5
x
:
−15
=
8
:
2
(6)
4
:
1
=
48
:
3
x
(7)
−1
:
−4
=
−4
x
:
−16
(8)
2
:
10
=
−1
:
−
x
(9)
−3
:
9
=
x
−
3
:
6
(10)
−20
:
−5
=
x
−
3
:
−4
(11)
x
−
3
:
2
=
4
:
−8
(12)
10
:
−5
x
=
−4
:
8
(13)
−4
:
4
=
4
x
:
12
(14)
−9
:
3
x
=
4
:
16
(15)
10
:
2
x
=
1
:
−5
(16)
4
:
−4
=
−3
x
:
9
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
x
−
3
:
3
=
2
:
−3
−3
×
(
x
−
3
)
=
3
×
2
x
−
3
=
−2
x
=
1
(2)
36
:
−3
x
=
12
:
3
12
×
(
−3
)
x
=
36
×
3
x
=
−3
(3)
−2
:
−4
=
x
−
5
:
2
−4
×
(
x
−
5
)
=
−2
×
2
x
−
5
=
1
x
=
6
(4)
−2
:
8
=
2
x
:
−8
8
×
2
x
=
−2
×
(
−8
)
x
=
1
(5)
5
x
:
−15
=
8
:
2
2
×
5
x
=
−15
×
8
x
=
−12
(6)
4
:
1
=
48
:
3
x
4
×
3
x
=
48
x
=
4
(7)
−1
:
−4
=
−4
x
:
−16
−4
×
(
−4
)
x
=
−
(
−16
)
x
=
1
(8)
2
:
10
=
−1
:
−
x
2
×
(
−1
)
x
=
10
×
(
−1
)
x
=
5
(9)
−3
:
9
=
x
−
3
:
6
9
×
(
x
−
3
)
=
−3
×
6
x
−
3
=
−2
x
=
1
(10)
−20
:
−5
=
x
−
3
:
−4
−5
×
(
x
−
3
)
=
−20
×
(
−4
)
x
−
3
=
−16
x
=
−13
(11)
x
−
3
:
2
=
4
:
−8
−8
×
(
x
−
3
)
=
2
×
4
x
−
3
=
−1
x
=
2
(12)
10
:
−5
x
=
−4
:
8
−4
×
(
−5
)
x
=
10
×
8
x
=
4
(13)
−4
:
4
=
4
x
:
12
4
×
4
x
=
−4
×
12
x
=
−3
(14)
−9
:
3
x
=
4
:
16
4
×
3
x
=
−9
×
16
x
=
−12
(15)
10
:
2
x
=
1
:
−5
2
x
=
10
×
(
−5
)
x
=
−25
(16)
4
:
−4
=
−3
x
:
9
−4
×
(
−3
)
x
=
4
×
9
x
=
3