［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
[
y
]
x
=
6
(2)
q
＋
r
[
r
]
p
=
5
(3)
10
(
x
＋
y
＋
z
)
[
x
]
S
=
3
(4)
[
w
]
u
=
6
(
9
v
＋
w
)
＋
3
(5)
[
w
]
A
=
8
(
u
＋
v
＋
w
)
(6)
[
b
]
a
=
6
(
b
＋
c
)
(7)
[
c
]
a
=
9
(
b
＋
c
)
(8)
10
(
u
＋
v
＋
w
)
[
v
]
A
=
7
(9)
[
c
]
X
=
8
(
a
＋
b
＋
c
)
(10)
[
b
]
a
=
10
(
5
b
＋
c
)
＋
5
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
(
y
＋
z
)
r
[
y
]
x
=
6
(
y
＋
z
)
r
6
=
x
y
＋
z
6
x
=
r
y
6
x
=
−
z
r
(2)
q
＋
r
[
r
]
p
=
5
q
＋
r
5
=
p
q
＋
r
=
5
p
r
=
5
p
−
q
(3)
10
(
x
＋
y
＋
z
)
[
x
]
S
=
3
10
(
x
＋
y
＋
z
)
3
=
S
x
＋
y
＋
z
3
=
S
10
x
3
=
S
−
y
−
z
10
(4)
[
w
]
u
=
6
(
9
v
＋
w
)
＋
3
6
(
9
v
＋
w
)
=
u
−
3
9
v
＋
w
u
−
3
=
6
w
1
1
=
u
−
9
v
−
6
2
(5)
[
w
]
A
=
8
(
u
＋
v
＋
w
)
8
(
u
＋
v
＋
w
)
=
A
u
＋
v
＋
w
1
=
A
8
w
1
=
A
−
u
−
v
8
(6)
[
b
]
a
=
6
(
b
＋
c
)
6
(
b
＋
c
)
=
a
b
＋
c
1
=
a
6
b
1
=
a
−
c
6
(7)
[
c
]
a
=
9
(
b
＋
c
)
9
(
b
＋
c
)
=
a
b
＋
c
1
=
a
9
c
1
=
a
−
b
9
(8)
10
(
u
＋
v
＋
w
)
[
v
]
A
=
7
10
(
u
＋
v
＋
w
)
7
=
A
u
＋
v
＋
w
7
=
A
10
v
7
=
A
−
u
−
w
10
(9)
[
c
]
X
=
8
(
a
＋
b
＋
c
)
8
(
a
＋
b
＋
c
)
=
X
a
＋
b
＋
c
1
=
X
8
c
1
=
X
−
a
−
b
8
(10)
[
b
]
a
=
10
(
5
b
＋
c
)
＋
5
10
(
5
b
＋
c
)
=
a
−
5
5
b
＋
c
a
−
5
=
10
5
b
1
1
=
a
−
c
−
10
2
b
1
1
1
=
a
−
c
−
50
5
10