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Which of these equations does NOT have any solutions?

A.
10 – 3
x
– 1 = 7 + 3
x
+ 2

B.
12

7
x

10
=
x

8
x
+
2

C.
13

4
x
+
2
=
3
x

7
x
+
2

D.
15

2
x

2
=
10
x
+
3
x
+
2