Divide. `(x^2 - 49)/(x^2 -1 x - 42)-:(5 x)/(x + 6)`

State the quotient in simplest form.

`(x^2 - 49)/(x^2 -1 x - 42)-:(5 x)/(x + 6)=`

Enter the numerator and denominator separately in the boxes above. If the denominator is 1, enter the number 1. Do not leave either box blank.