Solve the equation below for x cx - 4 = 7
1. x= c/3
2.x= 11/c
3.x= 3/c
4.x= c/11

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Hnmmmn not sure