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