X+y=0 and 3x-y=2 how many solutions exist

How do you answer this question? (step by step)

What is the solution to the division problem below x3+x2-11x+4/x+4

Which two properties of equality could zoe use to finish solving for x? the equation is 3x - 4 = -10 for x so a either the addition or subtraction property of equalityb ether the multiplication or division property of equality c ether the addition or division property of equality d ether the subtraction or division property of equality just a simple a b c or d plz.