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