Given the system of equations. which of the {-5x+y=6 --> y=5x+6 3x-y=14} options represents the resulting equation after an equivalent expression for y is substituted into the second equation. 3x - (5x + 6) = 14 -3x + 5x + 6 = 6 3(5x + 6) - y = 14 -3x(5x + 6) + y = 6

The first thing we must do is solve the problem step by step to choose the correct option.
 Step 1:
 Clear y from the first equation:
 -5x + y = 6
 y = 5x + 6
 Step 2:
 Replace this value of y in the second equation:
 3x-y = 14
 Substituting:
 3x- (5x + 6) = 14
 answer
 the resulting equation after an equivalent expression for y is substituted into the second equation is 
 3x- (5x + 6) = 14