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©2018 数学クラブ http://sugaku.club/
月 日（ ）
● 次の方程式を解きなさい
[0E2-00]
(1)
44
−
(
−3
)
x
=
−8
x
(2)
−9
x
＋
3
=
−78
(3)
−5
−
5
x
=
0
(4)
−7
x
−
80
=
3
x
(5)
40
＋
(
−10
)
x
=
10
x
(6)
−9
＋
(
−10
)
x
=
81
(7)
−1
−
9
x
=
−64
(8)
−60
＋
5
x
=
−5
x
(9)
5
x
−
56
=
−3
x
(10)
2
x
−
(
−5
)
=
15
(11)
−24
＋
4
x
=
−8
x
(12)
−6
＋
7
x
=
−13
(13)
−4
x
＋
6
=
2
x
(14)
16
＋
6
x
=
2
x
©2018 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
44
−
(
−3
)
x
=
−8
x
3
x
＋
8
x
=
−
44
11
x
=
−44
x
=
−4
(2)
−9
x
＋
3
=
−78
−9
x
=
−78
−
3
−9
x
=
−81
x
=
9
(3)
−5
−
5
x
=
0
−
5
x
=
5
−
5
x
=
5
x
=
−1
(4)
−7
x
−
80
=
3
x
−7
x
−
3
x
=
80
−10
x
=
80
x
=
−8
(5)
40
＋
(
−10
)
x
=
10
x
−10
x
−
10
x
=
−
40
−20
x
=
−40
x
=
2
(6)
−9
＋
(
−10
)
x
=
81
−10
x
=
81
＋
9
−10
x
=
90
x
=
−9
(7)
−1
−
9
x
=
−64
−
9
x
=
−64
＋
1
−
9
x
=
−63
x
=
7
(8)
−60
＋
5
x
=
−5
x
5
x
＋
5
x
=
60
10
x
=
60
x
=
6
(9)
5
x
−
56
=
−3
x
5
x
＋
3
x
=
56
8
x
=
56
x
=
7
(10)
2
x
−
(
−5
)
=
15
2
x
=
15
−
5
2
x
=
10
x
=
5
(11)
−24
＋
4
x
=
−8
x
4
x
＋
8
x
=
24
12
x
=
24
x
=
2
(12)
−6
＋
7
x
=
−13
7
x
=
−13
＋
6
7
x
=
−7
x
=
−1
(13)
−4
x
＋
6
=
2
x
−4
x
−
2
x
=
−
6
−6
x
=
−6
x
=
1
(14)
16
＋
6
x
=
2
x
6
x
−
2
x
=
−
16
4
x
=
−16
x
=
−4