［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．
[182-00]
(1)
2
(
p
＋
q
＋
r
)
[
r
]
m
=
6
(2)
[
y
]
S
=
4
(
x
＋
y
＋
z
)
(3)
(
y
＋
z
)
r
[
z
]
x
=
6
(4)
[
q
]
p
=
9
(
10
q
＋
r
)
＋
7
(5)
[
w
]
u
=
5
(
v
＋
w
)
(6)
6
(
a
＋
b
＋
c
)
[
b
]
X
=
9
(7)
[
c
]
a
=
2
(
3
b
＋
c
)
＋
8
(8)
(
b
＋
c
)
h
[
b
]
a
=
8
(9)
[
c
]
a
=
3
(
7
b
＋
c
)
＋
7
(10)
6
(
y
＋
z
)
[
z
]
S
=
x
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
p
＋
q
＋
r
)
[
r
]
m
=
6
2
(
p
＋
q
＋
r
)
6
=
m
p
＋
q
＋
r
=
3
m
r
=
3
m
−
p
−
q
(2)
[
y
]
S
=
4
(
x
＋
y
＋
z
)
4
(
x
＋
y
＋
z
)
=
S
x
＋
y
＋
z
1
=
S
4
y
1
=
S
−
x
−
z
4
(3)
(
y
＋
z
)
r
[
z
]
x
=
6
(
y
＋
z
)
r
6
=
x
y
＋
z
6
x
=
r
z
6
x
=
−
y
r
(4)
[
q
]
p
=
9
(
10
q
＋
r
)
＋
7
9
(
10
q
＋
r
)
=
p
−
7
10
q
＋
r
p
−
7
=
9
10
q
1
7
=
p
−
r
−
9
9
q
1
1
7
=
p
−
r
−
90
10
90
(5)
[
w
]
u
=
5
(
v
＋
w
)
5
(
v
＋
w
)
=
u
v
＋
w
1
=
u
5
w
1
=
u
−
v
5
(6)
6
(
a
＋
b
＋
c
)
[
b
]
X
=
9
6
(
a
＋
b
＋
c
)
9
=
X
a
＋
b
＋
c
3
=
X
2
b
3
=
X
−
a
−
c
2
(7)
[
c
]
a
=
2
(
3
b
＋
c
)
＋
8
2
(
3
b
＋
c
)
=
a
−
8
3
b
＋
c
a
−
8
=
2
c
1
=
a
−
3
b
−
4
2
(8)
(
b
＋
c
)
h
[
b
]
a
=
8
(
b
＋
c
)
h
8
=
a
b
＋
c
8
a
=
h
b
8
a
=
−
c
h
(9)
[
c
]
a
=
3
(
7
b
＋
c
)
＋
7
3
(
7
b
＋
c
)
=
a
−
7
7
b
＋
c
a
−
7
=
3
c
1
7
=
a
−
7
b
−
3
3
(10)
6
(
y
＋
z
)
[
z
]
S
=
x
6
(
y
＋
z
)
x
=
S
y
＋
z
x
S
=
6
z
x
S
=
−
y
6