<span><u> y+1 </u> <u> </u> <u> 1-x </u> <u>--</u> <u>
</u><span>y^2-xy x^2-xy</span></span>
(y+1)/y(y-x)-(1-x)/x(x-y)=(x(y+1)+y(1-x))/xy(y-x)=(xy+x+y-xy)/xy(y-x)=(x+y)/xy(y-x)
(x -4)/(3 -x) =1
x -4 =1*(3 -x)
x -4 -3 +x =0
2x -7 =0
2x =7
x =7/2
x =3.5