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