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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
[0E2-00]
(1)
10
x
＋
7
=
3
x
(2)
6
x
＋
8
=
2
x
(3)
−5
x
＋
1
=
−24
(4)
−6
x
−
(
−81
)
=
3
x
(5)
−6
x
＋
(
−36
)
=
−10
x
(6)
−5
x
＋
(
−8
)
=
27
(7)
5
x
＋
1
=
6
(8)
4
＋
(
−4
)
x
=
−12
(9)
−10
＋
x
=
−20
(10)
9
x
−
7
=
−70
(11)
−5
x
−
(
−24
)
=
3
x
(12)
7
x
−
(
−10
)
=
−60
(13)
−10
x
＋
8
=
108
(14)
2
x
−
(
−20
)
=
4
x
©2025 数学クラブ http://sugaku.club/
月 日（ ）
【解答例】
(1)
10
x
＋
7
=
3
x
10
x
−
3
x
=
−
7
7
x
=
−7
x
=
−1
(2)
6
x
＋
8
=
2
x
6
x
−
2
x
=
−
8
4
x
=
−8
x
=
−2
(3)
−5
x
＋
1
=
−24
−5
x
=
−24
−
1
−5
x
=
−25
x
=
5
(4)
−6
x
−
(
−81
)
=
3
x
−6
x
−
3
x
=
−81
−9
x
=
−81
x
=
9
(5)
−6
x
＋
(
−36
)
=
−10
x
−6
x
＋
10
x
=
36
4
x
=
36
x
=
9
(6)
−5
x
＋
(
−8
)
=
27
−5
x
=
27
＋
8
−5
x
=
35
x
=
−7
(7)
5
x
＋
1
=
6
5
x
=
6
−
1
5
x
=
5
x
=
1
(8)
4
＋
(
−4
)
x
=
−12
−4
x
=
−12
−
4
−4
x
=
−16
x
=
4
(9)
−10
＋
x
=
−20
x
=
−20
＋
10
x
=
−10
x
=
−10
(10)
9
x
−
7
=
−70
9
x
=
−70
＋
7
9
x
=
−63
x
=
−7
(11)
−5
x
−
(
−24
)
=
3
x
−5
x
−
3
x
=
−24
−8
x
=
−24
x
=
3
(12)
7
x
−
(
−10
)
=
−60
7
x
=
−60
−
10
7
x
=
−70
x
=
−10
(13)
−10
x
＋
8
=
108
−10
x
=
108
−
8
−10
x
=
100
x
=
−10
(14)
2
x
−
(
−20
)
=
4
x
2
x
−
4
x
=
−20
−2
x
=
−20
x
=
10