Expanding the first expression gives three copies of \(x\) and three copies of \(5\): \(3x+15\).

The other expression has the same three copies of \(x\), but only one copy of \(5\). The difference is the two extra fives, or \(10\).

Answer

\(3(x+5)=3x+15\), which is \(10\) greater than \(3x+5\).