[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)
−4
:
x
+
3
=
8
:
−2
(2)
6
:
x
−
2
=
−3
:
4
(3)
−4
:
−1
=
8
:
−
x
(4)
x
+
3
:
5
=
15
:
−3
(5)
9
:
−3
=
−4
x
:
−20
(6)
2
:
1
=
−4
x
:
−8
(7)
−8
:
4
=
2
:
x
−
4
(8)
−4
:
x
−
3
=
−2
:
−1
(9)
x
+
4
:
6
=
1
:
2
(10)
−5
:
−25
=
x
−
5
:
−5
(11)
−3
:
1
=
3
x
:
−12
(12)
5
:
−20
=
−25
:
5
x
(13)
−10
:
x
+
3
=
−6
:
−3
(14)
20
:
−20
=
−4
x
:
−20
(15)
−3
x
:
12
=
12
:
−16
(16)
−1
:
1
=
−3
x
:
15
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−4
:
x
+
3
=
8
:
−2
8
×
(
x
+
3
)
=
−4
×
(
−2
)
x
+
3
=
1
x
=
−2
(2)
6
:
x
−
2
=
−3
:
4
−3
×
(
x
−
2
)
=
6
×
4
x
−
2
=
−8
x
=
−6
(3)
−4
:
−1
=
8
:
−
x
−4
×
(
−1
)
x
=
−
8
x
=
−2
(4)
x
+
3
:
5
=
15
:
−3
−3
×
(
x
+
3
)
=
5
×
15
x
+
3
=
−25
x
=
−28
(5)
9
:
−3
=
−4
x
:
−20
−3
×
(
−4
)
x
=
9
×
(
−20
)
x
=
−15
(6)
2
:
1
=
−4
x
:
−8
−4
x
=
2
×
(
−8
)
x
=
4
(7)
−8
:
4
=
2
:
x
−
4
−8
×
(
x
−
4
)
=
4
×
2
x
−
4
=
−1
x
=
3
(8)
−4
:
x
−
3
=
−2
:
−1
−2
×
(
x
−
3
)
=
−4
×
(
−1
)
x
−
3
=
−2
x
=
1
(9)
x
+
4
:
6
=
1
:
2
2
×
(
x
+
4
)
=
6
x
+
4
=
3
x
=
−1
(10)
−5
:
−25
=
x
−
5
:
−5
−25
×
(
x
−
5
)
=
−5
×
(
−5
)
x
−
5
=
−1
x
=
4
(11)
−3
:
1
=
3
x
:
−12
3
x
=
−3
×
(
−12
)
x
=
12
(12)
5
:
−20
=
−25
:
5
x
5
×
5
x
=
−20
×
(
−25
)
x
=
20
(13)
−10
:
x
+
3
=
−6
:
−3
−6
×
(
x
+
3
)
=
−10
×
(
−3
)
x
+
3
=
−5
x
=
−8
(14)
20
:
−20
=
−4
x
:
−20
−20
×
(
−4
)
x
=
20
×
(
−20
)
x
=
−5
(15)
−3
x
:
12
=
12
:
−16
−16
×
(
−3
)
x
=
12
×
12
x
=
3
(16)
−1
:
1
=
−3
x
:
15
−3
x
=
−
15
x
=
5