The roots of the equation 1a+b+x=(1a)+(1b)+(1x) are?
Take a=1 and b=1, we basically need to find the value of x. now, the equation becomes 1(2+x)=2+1x x2+2x+1=0 solving for x, we get x=-1,-1
Which is nothing but -a,-b. option c is the answer