［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)
1
[
b
]
a
=
b
c
4
(3)
1
[
v
]
u
=
−
v
5
(4)
6
[
z
]
x
=
−
y
z
5
(5)
3
[
b
]
a
=
b
c
5
(6)
1
[
v
]
u
=
−
v
w
3
(7)
1
3
[
v
]
u
=
v
w
4
(8)
1
[
v
]
u
=
v
2
(9)
1
3
[
z
]
x
=
−
y
z
2
(10)
1
2
[
r
]
p
=
q
r
2
©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)
1
[
b
]
a
=
b
c
4
1
b
c
4
=
a
b
4
a
=
c
(3)
1
[
v
]
u
=
−
v
5
1
−
v
5
=
u
v
=
−5
u
(4)
6
[
z
]
x
=
−
y
z
5
6
−
y
z
5
=
x
z
5
x
=
−
6
y
(5)
3
[
b
]
a
=
b
c
5
3
b
c
5
=
a
b
5
a
=
3
c
(6)
1
[
v
]
u
=
−
v
w
3
1
−
v
w
3
=
u
v
3
u
=
−
w
(7)
1
3
[
v
]
u
=
v
w
4
1
3
v
w
4
=
u
v
4
u
=
3
w
(8)
1
[
v
]
u
=
v
2
1
v
2
=
u
v
=
2
u
(9)
1
3
[
z
]
x
=
−
y
z
2
1
3
−
y
z
2
=
x
z
2
x
=
−
3
y
(10)
1
2
[
r
]
p
=
q
r
2
1
2
q
r
2
=
p
r
2
p
=
2
q