Answer
(4, -1)
Work Step by Step
Add the equations to eliminate a variable:
4x + y = 15
-4x + 3y = -19
=
4y = -4
y = -1
Let y = -1 in one equation to solve for y:
4x + (-1) = 15
4x = 16
x = 4
Check the solution (4, -1) in the other equation:
-4(4) + 3(-1) = -19
-16 - 3 = -19
-19 = -19; True