Solve for both systems: 4x + 2y = 36 and 3x + 4y = 37

4x + 2y = 36

4x -4x+ 2y = 36-4x

2y = 36-4x

2y/2 = 36-4x/2

y=18-2x

3x + 4y = 37

3x + 4(18-2x) = 37

3x + 4(18) (4)(-2x) = 37

3x+72-8x=37

72-5x=37

72-5x-72=37-72

-5x=-35

-5x/-5=-35/-5

x=7

y=18-2x

y=18-2(7)

y=18-14=4