You will get the same answer
4x - y = 3 ⇒ y = 4x - 3 (1)
2x + 3y = 19 (2)
Put (1) into (2) for y and we have
2x + 3(4x - 3) = 19 simplify
2x + 12x - 9 = 19
14x - 9 = 19 add 9 to both sides
14x = 28 divide both sides by 14
x = 2
And using (1) y = 4(2) - 3 = 5
+1438 
