vlcarr678 vlcarr678 29-09-2022 Mathematics contestada Choose a variable to isolate and what it is equal to in the system of equations below. 4x = y + 4 4y = 3x-1 OA. y = 4x-4 OB. 2y = x-3 OC. y = 4x+3 D. 4y= 4x-1