Solve the system of equations using substitution. y = 4x + 6 y = 2x

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.

1. 5/82.95% is better than 7/8

Ican't read this very blury