［文字サイズの変更］
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の等式を[ ]内の変数について解きなさい．
[181-20]
(1)
1
2
[
c
]
a
=
b
c
2
(2)
6
2
[
c
]
a
=
b
c
5
(3)
3
[
b
]
a
=
−
b
5
(4)
1
2
[
q
]
p
=
q
r
5
(5)
1
[
y
]
x
=
−
y
3
(6)
3
[
q
]
p
=
−
q
4
(7)
6
3
[
y
]
x
=
y
z
5
(8)
1
[
v
]
u
=
−
v
5
(9)
1
[
z
]
x
=
−
y
z
3
(10)
2
[
v
]
u
=
v
3
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
1
2
[
c
]
a
=
b
c
2
1
2
b
c
2
=
a
c
2
a
=
2
b
(2)
6
2
[
c
]
a
=
b
c
5
6
2
b
c
5
=
a
c
5
a
=
2
6
b
(3)
3
[
b
]
a
=
−
b
5
3
−
b
5
=
a
b
5
=
−
a
3
(4)
1
2
[
q
]
p
=
q
r
5
1
2
q
r
5
=
p
q
5
p
=
2
r
(5)
1
[
y
]
x
=
−
y
3
1
−
y
3
=
x
y
=
−3
x
(6)
3
[
q
]
p
=
−
q
4
3
−
q
4
=
p
q
4
=
−
p
3
(7)
6
3
[
y
]
x
=
y
z
5
6
3
y
z
5
=
x
y
5
x
=
3
6
z
(8)
1
[
v
]
u
=
−
v
5
1
−
v
5
=
u
v
=
−5
u
(9)
1
[
z
]
x
=
−
y
z
3
1
−
y
z
3
=
x
z
3
x
=
−
y
(10)
2
[
v
]
u
=
v
3
2
v
3
=
u
v
3
=
u
2