Question 624685
-2x+5-{4-[5y-2y+9x]-3]-6x}
-2x+5-{4-[5y-2y+9x]-3]-6x}
-2x+5-{4-5y+2y-9x-3-6x}
-2x+5-4+5y-2y+9x+3+6x
=13x+3y+4