Can someone help me with this? Its fairly easy but i genuinely dont remember

Recall the definition of a polynomial expression. find two polynomial expressions whose quotient, when simplified,is. use that division problem to determine whether polynomials are closed under division. then describe how theother three operations-addition, subtraction, and multiplication-are different from division of polynomials.

What is the solution of the systems of equations? y=2/3x+3 x=-2

For the equations below which statement is true ? -2x=14 6x=-42