［文字サイズの変更］
▼
▲
©2026 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[211-00]
(1)
2
(
x
−
6
)
=
10
(2)
2
(
x
−
7
)
=
49
(3)
2
(
x
−
2
)
=
4
(4)
2
(
x
＋
3
)
=
8
(5)
2
(
x
＋
2
)
=
9
(6)
2
(
x
＋
3
)
=
64
(7)
2
(
x
−
2
)
=
1
(8)
2
(
x
−
2
)
=
7
(9)
2
(
x
＋
7
)
=
4
(10)
2
(
x
−
5
)
=
3
(11)
2
(
x
＋
8
)
=
2
(12)
2
(
x
＋
10
)
−
1
=
0
©2026 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
2
(
x
−
6
)
=
10
x
−
6
10
=
±
x
10
=
6
±
(2)
2
(
x
−
7
)
=
49
x
−
7
=
±
7
x
=
7
±
7
x
=
14
，
0
(3)
2
(
x
−
2
)
=
4
x
−
2
=
±
2
x
=
2
±
2
x
=
4
，
0
(4)
2
(
x
＋
3
)
=
8
x
＋
3
2
=
±
2
x
2
=
−
3
±
2
(5)
2
(
x
＋
2
)
=
9
x
＋
2
=
±
3
x
=
−
2
±
3
x
=
1
，
−5
(6)
2
(
x
＋
3
)
=
64
x
＋
3
=
±
8
x
=
−
3
±
8
x
=
5
，
−11
(7)
2
(
x
−
2
)
=
1
x
−
2
=
±
1
x
=
2
±
1
x
=
3
，
1
(8)
2
(
x
−
2
)
=
7
x
−
2
7
=
±
x
7
=
2
±
(9)
2
(
x
＋
7
)
=
4
x
＋
7
=
±
2
x
=
−
7
±
2
x
=
−5
，
−9
(10)
2
(
x
−
5
)
=
3
x
−
5
3
=
±
x
3
=
5
±
(11)
2
(
x
＋
8
)
=
2
x
＋
8
2
=
±
x
2
=
−
8
±
(12)
2
(
x
＋
10
)
−
1
=
0
x
＋
10
=
±
1
x
=
−
10
±
1
x
=
−9
，
−11