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©2024 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[0E1-20]
(1)
3
5
−
x
=
2
7
(2)
9
9
x
=
−
8
8
(3)
4
3
x
=
3
7
(4)
5
1
x
=
4
3
(5)
1
8
x
=
2
5
(6)
19
5
−
x
=
10
3
(7)
1
11
−
x
=
2
10
(8)
1
8
−
x
=
5
9
(9)
3
2
x
=
5
3
(10)
5
8
x
=
−
3
5
(11)
2
4
x
=
−
5
3
(12)
1
6
x
=
4
5
(13)
1
7
x
=
−
2
4
(14)
4
1
x
=
−
3
3
©2024 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
3
5
−
x
=
2
7
x
10
=
−
21
(2)
9
9
x
=
−
8
8
x
=
−1
(3)
4
3
x
=
3
7
x
9
=
28
(4)
5
1
x
=
4
3
x
4
=
15
(5)
1
8
x
=
2
5
x
16
=
5
(6)
19
5
−
x
=
10
3
x
50
=
−
57
(7)
1
11
−
x
=
2
10
x
11
=
−
5
(8)
1
8
−
x
=
5
9
x
40
=
−
9
(9)
3
2
x
=
5
3
x
10
=
9
(10)
5
8
x
=
−
3
5
x
24
=
−
25
(11)
2
4
x
=
−
5
3
x
10
=
−
3
(12)
1
6
x
=
4
5
x
24
=
5
(13)
1
7
x
=
−
2
4
x
7
=
−
2
(14)
4
1
x
=
−
3
3
x
1
=
−
4