austinmartin0312 austinmartin0312 04-03-2022 Mathematics contestada What is the resulting equation when the expression for y in the second equation is substituted into the first equation? 3x + y = 1 y = 6 - 4x a: 7x + 6 = 1 b: -x + 6 = 1 c: x + 6 = 1