$30\sqrt{ 2 }+9\sqrt{ 12 }-7\sqrt{ 48 }-3\sqrt{ 98 }$
Simplify the radical expression$30\sqrt{ 2 }+18\sqrt{ 3 }-7\sqrt{ 48 }-3\sqrt{ 98 }$
Simplify the radical expression$30\sqrt{ 2 }+18\sqrt{ 3 }-28\sqrt{ 3 }-3\sqrt{ 98 }$
Simplify the radical expression$30\sqrt{ 2 }+18\sqrt{ 3 }-28\sqrt{ 3 }-21\sqrt{ 2 }$
Collect like terms$9\sqrt{ 2 }+18\sqrt{ 3 }-28\sqrt{ 3 }$
Collect like terms$\begin{align*}&9\sqrt{ 2 }-10\sqrt{ 3 } \\&\approx-4.59259\end{align*}$