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©2019 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[0E2-00]
(1)
3
x
＋
(
−5
)
=
−17
(2)
−9
x
＋
30
=
−6
x
(3)
3
x
＋
(
−5
)
=
−8
(4)
10
−
9
x
=
−62
(5)
5
x
−
4
=
−39
(6)
−7
x
−
4
=
17
(7)
−44
＋
8
x
=
−3
x
(8)
8
x
−
(
−4
)
=
4
x
(9)
−6
＋
(
−9
)
x
=
57
(10)
40
＋
(
−9
)
x
=
−4
x
(11)
−1
−
3
x
=
5
(12)
3
x
−
4
=
2
x
(13)
6
＋
3
x
=
9
(14)
−160
＋
10
x
=
−10
x
©2019 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
3
x
＋
(
−5
)
=
−17
3
x
=
−17
＋
5
3
x
=
−12
x
=
−4
(2)
−9
x
＋
30
=
−6
x
−9
x
＋
6
x
=
−
30
−3
x
=
−30
x
=
10
(3)
3
x
＋
(
−5
)
=
−8
3
x
=
−8
＋
5
3
x
=
−3
x
=
−1
(4)
10
−
9
x
=
−62
−
9
x
=
−62
−
10
−
9
x
=
−72
x
=
8
(5)
5
x
−
4
=
−39
5
x
=
−39
＋
4
5
x
=
−35
x
=
−7
(6)
−7
x
−
4
=
17
−7
x
=
17
＋
4
−7
x
=
21
x
=
−3
(7)
−44
＋
8
x
=
−3
x
8
x
＋
3
x
=
44
11
x
=
44
x
=
4
(8)
8
x
−
(
−4
)
=
4
x
8
x
−
4
x
=
−4
4
x
=
−4
x
=
−1
(9)
−6
＋
(
−9
)
x
=
57
−9
x
=
57
＋
6
−9
x
=
63
x
=
−7
(10)
40
＋
(
−9
)
x
=
−4
x
−9
x
＋
4
x
=
−
40
−5
x
=
−40
x
=
8
(11)
−1
−
3
x
=
5
−
3
x
=
5
＋
1
−
3
x
=
6
x
=
−2
(12)
3
x
−
4
=
2
x
3
x
−
2
x
=
4
x
=
4
(13)
6
＋
3
x
=
9
3
x
=
9
−
6
3
x
=
3
x
=
1
(14)
−160
＋
10
x
=
−10
x
10
x
＋
10
x
=
160
20
x
=
160
x
=
8