## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$y=-5$
Adding $4.7$ to both sides of the given equation, $-9.7=-4.7+y$, then, \begin{array}{l} -9.7+4.7=-4.7+y+4.7 \\\\ -5=y \\\\ y=-5 .\end{array}