Use the substitution method to solve the system of equations choose the correct ordered pairs x plus 2y 12 y x plus 3?

Answer 1

Without any equality signs they can't be considered to be equations.

But if you mean: x+2y =12 and y = x+3 then the solution is as follows

x+2y = 12

-x+y = 3

Adding the equations together: 3y = 15 and y = 5

By substitution: x = 2

Solution: x = 2 and y = 5

Answer 2

52