I am having difficulty solving this equation

solve the rational equation

(-4)/(x-1)=7/(2-x)+3/(x+1)

Please help me.

So far I got used the least common factor of 2 and (x-1)(x+1)

To get -8(x+1)=7(x+1)+6(x-1)

But the answer on the back of my book is 5/13 while I get like -9/21?I am confused.