Question 318582
{{{2(8x^2y-7xy+3xy^2)-(3x^2y-2xy-9xy^2)=(16x^2y-14xy+6xy^2)-(3x^2y-2xy-9xy^2)}}}
{{{2(8x^2y-7xy+3xy^2)-(3x^2y-2xy-9xy^2)=(16x^2y-14xy+6xy^2)+
(-3x^2y+2xy+9xy^2)}}}
{{{2(8x^2y-7xy+3xy^2)-(3x^2y-2xy-9xy^2)=(16x^2y-3x^2y)+(-14xy+2xy)+(6xy^2+9xy^2)}}}
{{{2(8x^2y-7xy+3xy^2)-(3x^2y-2xy-9xy^2)=13x^2y-12xy+15xy^2}}}