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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)
5
(
2
x
y
−
7
x
)
x
(2)
2
(
10
p
+
3
q
)
(3)
2
b
(
2
a
−
9
)
(4)
8
(
6
a
−
2
b
)
(5)
7
(
2
x
y
−
6
x
)
÷
x
(6)
9
a
b
+
a
7
a
(7)
7
(
9
a
b
+
10
a
)
a
(8)
9
(
4
u
v
+
4
u
)
u
(9)
8
(
3
a
+
10
b
)
(10)
10
u
v
+
u
7
u
(11)
10
y
(
2
x
−
1
)
(12)
6
(
9
p
+
8
q
+
5
)
(13)
2
u
v
+
5
u
9
u
(14)
7
p
q
+
2
p
3
p
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
5
(
2
x
y
−
7
x
)
x
=
10
y
−
35
(2)
2
(
10
p
+
3
q
)
=
20
p
+
6
q
(3)
2
b
(
2
a
−
9
)
=
4
a
b
−
18
b
(4)
8
(
6
a
−
2
b
)
=
48
a
−
16
b
(5)
7
(
2
x
y
−
6
x
)
÷
x
=
14
y
−
42
(6)
9
a
b
+
a
7
a
=
63
b
+
7
(7)
7
(
9
a
b
+
10
a
)
a
=
63
b
+
70
(8)
9
(
4
u
v
+
4
u
)
u
=
36
v
+
36
(9)
8
(
3
a
+
10
b
)
=
24
a
+
80
b
(10)
10
u
v
+
u
7
u
=
70
v
+
7
(11)
10
y
(
2
x
−
1
)
=
20
x
y
−
10
y
(12)
6
(
9
p
+
8
q
+
5
)
=
54
p
+
48
q
+
30
(13)
2
u
v
+
5
u
9
u
=
18
v
+
45
(14)
7
p
q
+
2
p
3
p
=
21
q
+
6