［文字サイズの変更］
▼
▲
©2025 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
3
[
z
]
x
=
y
z
2
(2)
1
[
v
]
u
=
−
v
5
(3)
1
2
[
b
]
a
=
−
b
c
2
(4)
1
3
[
b
]
a
=
b
c
3
(5)
4
[
y
]
x
=
y
z
5
(6)
1
3
[
r
]
p
=
q
r
5
(7)
1
[
v
]
u
=
v
5
(8)
2
[
r
]
p
=
q
r
3
(9)
3
3
[
q
]
p
=
−
q
r
5
(10)
3
[
z
]
x
=
−
y
z
4
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
1
3
[
z
]
x
=
y
z
2
1
3
y
z
2
=
x
z
2
x
=
3
y
(2)
1
[
v
]
u
=
−
v
5
1
−
v
5
=
u
v
=
−5
u
(3)
1
2
[
b
]
a
=
−
b
c
2
1
2
−
b
c
2
=
a
b
2
a
=
−
2
c
(4)
1
3
[
b
]
a
=
b
c
3
1
3
b
c
3
=
a
b
3
a
=
3
c
(5)
4
[
y
]
x
=
y
z
5
4
y
z
5
=
x
y
5
x
=
4
z
(6)
1
3
[
r
]
p
=
q
r
5
1
3
q
r
5
=
p
r
5
p
=
3
q
(7)
1
[
v
]
u
=
v
5
1
v
5
=
u
v
=
5
u
(8)
2
[
r
]
p
=
q
r
3
2
q
r
3
=
p
r
3
p
=
2
q
(9)
3
3
[
q
]
p
=
−
q
r
5
3
3
−
q
r
5
=
p
q
5
p
=
−
3
3
r
(10)
3
[
z
]
x
=
−
y
z
4
3
−
y
z
4
=
x
z
4
x
=
−
3
y