Question 326656
{{{(4w^2-49z^2)=(2w-7z)(2w+7z)}}}
{{{(14z-4w)=2(7z-2w)=-2(2w-7z)}}}
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{{{(4w^2-49z^2)/(14z-4w)=((2w-7z)(2w+7z))/(-2(2w-7z))}}}

{{{(4w^2-49z^2)/(14z-4w)=(2w+7z)/(-2)}}}