Answer:
x=10 and y=-10
Step-by-step explanation:
first pick for what you want to solve for first, in this case I picked y
so I put them for subtraction and i hade to multiply the first equation by 4 so I could cancel my X's and I just solved for y
then I plugged in my answer to the first equation, you can pick any of the 2 equations, and I solved for x