$6x$5=$30
$50-$30=$20
So 5 books?
Or
50=6x5+x
x=20
4/52 = 2/27 After you divide that you get .074 after you round it to the three places.
The answer is B. The leading coefficient is always the variable with the highest degree. In this case, it's 5.
6 has the same place value as the 7