Найдите сумму многочленов:

\(\displaystyle \left(14vu^{\,3}-7v^{\,2}u\,\right)+\left(7vu^{\,3}-14v^{\,2}u\,\right)=\)[?||-][ ]\(\displaystyle vu^{\,3}\)[?|+|-][ ]\(\displaystyle v^{\,2}u\)