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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)
2
1
−2
x
=
−
2
(2)
2
−3
x
=
−3
(3)
4
2
3
−
x
=
−
5
2
(4)
2
1
−5
x
=
−
5
(5)
2
7
x
=
6
(6)
4
2
x
=
1
3
(7)
2
32
−2
x
=
−
9
(8)
2
8
−2
x
=
−
9
(9)
2
5
−5
x
=
−
9
(10)
3
2
1
x
=
2
2
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
−2
x
1
=
−
2
2
x
1
=
4
x
1
=
±
2
(2)
2
−3
x
=
−3
2
x
=
1
x
=
±
1
(3)
4
2
−
x
5
3
=
−
2
2
x
15
=
8
x
1
30
=
±
4
(4)
2
−5
x
1
=
−
5
2
x
1
=
25
x
1
=
±
5
(5)
2
x
7
=
6
x
42
=
±
6
(6)
4
2
x
3
=
1
2
x
3
=
4
x
1
3
=
±
2
(7)
2
−2
x
32
=
−
9
2
x
16
=
9
x
4
=
±
3
(8)
2
−2
x
8
=
−
9
2
x
4
=
9
x
2
=
±
3
(9)
2
−5
x
5
=
−
9
2
x
1
=
9
x
1
=
±
3
(10)
3
2
x
2
1
=
2
2
x
1
=
3
x
3
=
±
3