Answer:

Step-by-step explanation:
You have to subtract 2 1/2 from 6 and that will equal 3 and 1/2.
2x = 18
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x = 18 : 2 =
x = 9
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(2*9 : 3) + 1 = 7
6 + 1 = 7
Correct answer is C.
There are infinitely many possible paths between X and Y.