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©2025 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[210-20]
(1)
3
2
1
x
=
2
2
(2)
2
1
−5
x
=
−
5
(3)
2
25
3
x
=
12
(4)
2
20
5
x
=
9
(5)
6
2
2
−
x
=
−
7
3
(6)
2
1
x
=
2
(7)
2
−3
x
=
−3
(8)
2
3
−
x
=
−
7
(9)
2
−3
x
=
−3
(10)
2
1
−
x
=
−
3
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
2
x
2
1
=
2
2
x
1
=
3
x
3
=
±
3
(2)
2
−5
x
1
=
−
5
2
x
1
=
25
x
1
=
±
5
(3)
2
3
x
25
=
12
2
x
25
=
36
x
5
=
±
6
(4)
2
5
x
20
=
9
2
x
4
=
9
x
2
=
±
3
(5)
6
2
−
x
7
2
=
−
3
2
x
7
=
9
x
1
7
=
±
3
(6)
2
x
1
=
2
x
2
=
±
2
(7)
2
−3
x
=
−3
2
x
=
1
x
=
±
1
(8)
2
−
x
3
=
−
7
2
x
3
=
7
x
21
=
±
7
(9)
2
−3
x
=
−3
2
x
=
1
x
=
±
1
(10)
2
−
x
1
=
−
3
2
x
1
=
3
x
3
=
±
3