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©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の方程式を解きなさい
[0E7-00]
(1)
−
x
+
6
1
=
10
10
(2)
10
x
−
10
90
=
7
7
(3)
−7
x
−
1
13
=
7
7
(4)
7
x
+
3
31
=
10
10
(5)
−7
x
+
4
32
=
7
7
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
−
x
+
6
1
=
10
10
−
x
+
6
=
1
−
x
=
1
−
6
x
=
5
(2)
10
x
−
10
90
=
7
7
10
x
−
10
=
90
10
x
=
90
+
10
x
=
10
(3)
−7
x
−
1
13
=
7
7
−7
x
−
1
=
13
−7
x
=
13
+
1
x
=
−2
(4)
7
x
+
3
31
=
10
10
7
x
+
3
=
31
7
x
=
31
−
3
x
=
4
(5)
−7
x
+
4
32
=
7
7
−7
x
+
4
=
32
−7
x
=
32
−
4
x
=
−4