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