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▲
©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の式を計算しなさい
[1A0-00]
(1)
2
(
5
a
b
−
5
a
)
a
(2)
4
u
v
−
7
u
4
u
(3)
6
(
2
u
v
+
6
u
)
u
(4)
6
a
b
+
9
a
4
a
(5)
5
(
3
a
b
+
7
a
)
a
(6)
3
b
(
7
a
+
2
)
(7)
6
u
v
−
5
u
8
u
(8)
5
b
(
8
a
+
10
)
(9)
9
(
3
u
v
−
9
u
)
u
(10)
6
(
5
a
b
+
7
a
)
a
(11)
9
p
q
+
6
p
5
p
(12)
9
(
10
p
q
+
9
p
)
p
(13)
2
(
5
p
−
10
q
−
7
)
(14)
4
(
3
a
b
−
6
a
)
÷
a
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
2
(
5
a
b
−
5
a
)
a
=
10
b
−
10
(2)
4
u
v
−
7
u
4
u
=
16
v
−
28
(3)
6
(
2
u
v
+
6
u
)
u
=
12
v
+
36
(4)
6
a
b
+
9
a
4
a
=
24
b
+
36
(5)
5
(
3
a
b
+
7
a
)
a
=
15
b
+
35
(6)
3
b
(
7
a
+
2
)
=
21
a
b
+
6
b
(7)
6
u
v
−
5
u
8
u
=
48
v
−
40
(8)
5
b
(
8
a
+
10
)
=
40
a
b
+
50
b
(9)
9
(
3
u
v
−
9
u
)
u
=
27
v
−
81
(10)
6
(
5
a
b
+
7
a
)
a
=
30
b
+
42
(11)
9
p
q
+
6
p
5
p
=
45
q
+
30
(12)
9
(
10
p
q
+
9
p
)
p
=
90
q
+
81
(13)
2
(
5
p
−
10
q
−
7
)
=
10
p
−
20
q
−
14
(14)
4
(
3
a
b
−
6
a
)
÷
a
=
12
b
−
24