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月 日（ ）
● 次の解が 解として適当な方程式を選びなさい
[0D0-00]
(1)
x
=
3
(A)
x
＋
7
=
10
(B)
−3
x
=
6
(C)
−6
x
−
2
=
10
(2)
x
=
5
(A)
3
x
=
3
(B)
x
−
1
=
4
(C)
8
x
=
40
(3)
x
=
4
(A)
7
x
＋
5
=
33
(B)
2
x
=
−14
(C)
−3
x
=
18
(4)
x
=
−10
(A)
−
x
＋
1
=
11
(B)
3
x
−
10
=
−7
(C)
x
＋
5
=
4
(5)
x
=
−7
(A)
3
x
=
18
(B)
7
x
−
3
=
39
(C)
−6
x
=
42
(6)
x
=
5
(A)
−4
x
＋
2
=
−34
(B)
−10
x
=
−70
(C)
7
x
=
35
(7)
x
=
−1
(A)
−5
x
=
5
(B)
3
x
=
−30
(C)
x
＋
1
=
0
(1)
(A)
(2)
(B)
(C)
(3)
(A)
(4)
(A)
(5)
(C)
(6)
(C)
(7)
(A)
(C)