What is 7x-11y 3x-1y-4x 3x?

To simplify the expression ( 7x - 11y + 3x - 1y - 4x + 3x ), first combine like terms. For the ( x ) terms: ( 7x + 3x - 4x + 3x = 9x ). For the ( y ) terms: ( -11y - 1y = -12y ). Thus, the simplified expression is ( 9x - 12y ).