Answer
$3 $
Work Step by Step
$\frac{17y + 3}{9y + 7} - \frac{-10y -18}{9y + 7} $
$=\frac{17y + 3}{9y + 7} - \frac{-(10y +18)}{9y + 7} $
$=\frac{17y + 3}{9y + 7} + \frac{(10y +18)}{9y + 7} $
$=\frac{17y + 3 + 10y +18}{9y + 7} $
$=\frac{27y + 21}{9y + 7} $
$=\frac{3\times (9y + 7)}{9y + 7} $
$=3 $