4x - 3y = 16
x + y = -3
Subtract y from both sides of the 2nd equation.
x = -3 - y
Now that we have a value of x, we can plug it into the first equation to solve for y.
4(-3 - y) - 3y = 16
Distributive property.
-12 - 4y - 3y = 16
Combine like terms.
-12 - 7y = 16
Add 12 to both sides.
-7y = 28
Divide both sides by -7.
y = -4
The value of y is -4, and now we can solve for the value of x.
Plug this value into either equation.
x + (-4) = -3
Add 4 to both sides.
x = 1
The value of x is 1.
x = 1
y = -4