Use the order of operations to simplify the expression. PLEASE EXPLAIN

Find the solution of each of the following.

2x minus y equals 6, x plus y equals negative 3

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided