Using Addition and/ or Subtraction with multiplication solve the following for x and y:

Question

Solve the following for X and y: x-5y=4,3x+y=12

Answer 1

x-5y = 4, multiply both sides by 3

3x-15y =12 subtract from the other equation

3x + y= 12

16y = 0

y=0, plug that into either of the original equations, x-5(0)=4, x-0=4

x=4

x=4, y= 0 (x,y) = (4,0) is the solution to the two equations