Show me the steps to solve Following the conventions in the book, complete this formal proof.

You can check your answers on the Proof Machine $($BOOL $1\mathrm{.}2).$ Notice that the Proof Machine always starts with $6$ lines. Since this proof only uses $5$ lines, you can delete one using the buttons.

$1.$ ~~$($~~P&Q$)$&~R Premise

$2.$

$3.$

$4.$

$5.$ P