Solve this system of equations algebraically using substitution y = x + 4 and x + y=2

x = - 1, y = 3

Step-by-step explanation:

To solve this system of equations, you have to plug in the value of y from the first equation into the second equation:

x + (x + 4) = y

2x + 4 = 2

2x = - 2

x = - 1

Then, plug x = - 1 into one of the equations:

y = (-1) + 4

y = 3