1) 3y - (y +2x) +x Distribute:  3y +(-y -(2x)) +x Multiply 2 by -1 to get -2 3y + (-y -2x) +x Simplify by adding terms. (remove unnecessary parentheses) 3y -y -2x +x Subtract y from 3y to get 2y 2y -2x +x Add -2x and x to get -x 2y -x Reorder 2y and -x Answer:  -x +2y 2) 4y -x Reorder 4y and -x Answer: -x + 4y