Question 851421
{{{4x - (6x - 2y) + (2x - 7y)=(4x-6x+2x) +(2y-7y)}}}
{{{4x - (6x - 2y) + (2x - 7y)=(0) +(-5y)}}}
{{{4x - (6x - 2y) + (2x - 7y)=-5y}}}