［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)
2
[
b
]
a
=
b
5
(2)
2
3
[
w
]
u
=
v
w
3
(3)
1
[
q
]
p
=
q
r
3
(4)
1
3
[
c
]
a
=
−
b
c
3
(5)
1
[
v
]
u
=
−
v
2
(6)
4
[
w
]
u
=
v
w
5
(7)
1
2
[
q
]
p
=
−
q
r
4
(8)
1
[
y
]
x
=
y
z
2
(9)
3
3
[
r
]
p
=
q
r
5
(10)
1
[
q
]
p
=
q
4
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
[
b
]
a
=
b
5
2
b
5
=
a
b
5
=
a
2
(2)
2
3
[
w
]
u
=
v
w
3
2
3
v
w
3
=
u
w
3
u
=
3
2
v
(3)
1
[
q
]
p
=
q
r
3
1
q
r
3
=
p
q
3
p
=
r
(4)
1
3
[
c
]
a
=
−
b
c
3
1
3
−
b
c
3
=
a
c
3
a
=
−
3
b
(5)
1
[
v
]
u
=
−
v
2
1
−
v
2
=
u
v
=
−2
u
(6)
4
[
w
]
u
=
v
w
5
4
v
w
5
=
u
w
5
u
=
4
v
(7)
1
2
[
q
]
p
=
−
q
r
4
1
2
−
q
r
4
=
p
q
4
p
=
−
2
r
(8)
1
[
y
]
x
=
y
z
2
1
y
z
2
=
x
y
2
x
=
z
(9)
3
3
[
r
]
p
=
q
r
5
3
3
q
r
5
=
p
r
5
p
=
3
3
q
(10)
1
[
q
]
p
=
q
4
1
q
4
=
p
q
=
4
p