［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．
[182-00]
(1)
(
y
＋
z
)
r
[
z
]
x
=
5
(2)
[
v
]
u
=
3
(
10
v
＋
w
)
＋
6
(3)
3
(
a
＋
b
＋
c
)
[
a
]
X
=
9
(4)
(
y
＋
z
)
r
[
y
]
x
=
8
(5)
v
＋
w
[
w
]
u
=
7
(6)
2
(
u
＋
v
＋
w
)
[
w
]
A
=
2
(7)
8
(
p
＋
q
＋
r
)
[
r
]
m
=
3
(8)
v
＋
w
[
v
]
u
=
8
(9)
[
v
]
A
=
7
(
u
＋
v
＋
w
)
(10)
(
q
＋
r
)
l
[
r
]
p
=
10
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
(
y
＋
z
)
r
[
z
]
x
=
5
(
y
＋
z
)
r
5
=
x
y
＋
z
5
x
=
r
z
5
x
=
−
y
r
(2)
[
v
]
u
=
3
(
10
v
＋
w
)
＋
6
3
(
10
v
＋
w
)
=
u
−
6
10
v
＋
w
u
−
6
=
3
10
v
1
=
u
−
w
−
2
3
v
1
1
1
=
u
−
w
−
30
10
5
(3)
3
(
a
＋
b
＋
c
)
[
a
]
X
=
9
3
(
a
＋
b
＋
c
)
9
=
X
a
＋
b
＋
c
=
3
X
a
=
3
X
−
b
−
c
(4)
(
y
＋
z
)
r
[
y
]
x
=
8
(
y
＋
z
)
r
8
=
x
y
＋
z
8
x
=
r
y
8
x
=
−
z
r
(5)
v
＋
w
[
w
]
u
=
7
v
＋
w
7
=
u
v
＋
w
=
7
u
w
=
7
u
−
v
(6)
2
(
u
＋
v
＋
w
)
[
w
]
A
=
2
2
(
u
＋
v
＋
w
)
2
=
A
u
＋
v
＋
w
=
A
w
=
A
−
u
−
v
(7)
8
(
p
＋
q
＋
r
)
[
r
]
m
=
3
8
(
p
＋
q
＋
r
)
3
=
m
p
＋
q
＋
r
3
=
m
8
r
3
=
m
−
p
−
q
8
(8)
v
＋
w
[
v
]
u
=
8
v
＋
w
8
=
u
v
＋
w
=
8
u
v
=
8
u
−
w
(9)
[
v
]
A
=
7
(
u
＋
v
＋
w
)
7
(
u
＋
v
＋
w
)
=
A
u
＋
v
＋
w
1
=
A
7
v
1
=
A
−
u
−
w
7
(10)
(
q
＋
r
)
l
[
r
]
p
=
10
(
q
＋
r
)
l
10
=
p
q
＋
r
10
p
=
l
r
10
p
=
−
q
l