x = -2 + y
-16x - 3y = -25
Let's substitute x into the second equation, since the first equation already tells us what x is.
Multiply -16 by x, which is (-2 + y)
-16(-2 + y) -3y = -25
Simplify.
32 -16y -3y = -25
Simplify. Get the variable on one side.
-19y = -57
Divide both sides by -19 to solve for the variable.
y = 3
Now plug y = 3 into one of the equations to find x. I'll use the first equation, since it's easier.
x = -2 + y
x = -2 + 3
x = 1
The answer is x= 1, y =3, which may be written as (1, 3). Hope this helps.