Algebra 1: Common Core (15th Edition)

$x+7$
$(4.4\div4.4)(x+7)$ It makes sense to resolve the first set of parentheses first because there is no variable in the expression. $4.4\div4.4=1$. Now we are left with $1(x+7)$. If we use the multiplication property of 1, we know anything multiplied by 1 is itself. $1(x+7)=x+7$. This cannot be simplified any further and is the correct answer.