Question 318796
Dividing by a fraction is equivalent to multiplying by its reciprocal.
{{{((7w-28)/9)/((w-4)/(21w))=((7(w-4))/9)*((21w)/(w-4))}}}
{{{((7w-28)/9)/((w-4)/(21w))=(7/3)*(7w)}}}
{{{((7w-28)/9)/((w-4)/(21w))=(49/3)w}}}