Respuesta :
First, replace x with the value of x.
x + y = 8 becomes -1 + y = 8
Solve for y.
-1 + y = 8
y = 9 <-- Add 1 to each side
So, y is equal to 9.
x + y = 8 becomes -1 + y = 8
Solve for y.
-1 + y = 8
y = 9 <-- Add 1 to each side
So, y is equal to 9.