Question 247831
-4x + 2y = 16 
  3x -y = 2
add y to both sides of equation 2
subtract 2 from both sides of equation2
y=3x-2
substitute 3x-2 in equation 1 for y
-4x + 2(3x-2) = 16 
-4x+6x-4=16
add 4 to both sides
combine
2x=20
x=10
y=3x-2
y=30-2
y=28
check
-4((10)+2(28)=16
-40+56=16
16=16
ok