Answer:
[tex]\large\boxed{y=\dfrac{17}{5}=3\dfrac{2}{5}=3.4}[/tex]
Step-by-step explanation:
[tex]2-5y=-15\qquad\text{subtract 2 from both sides}\\\\2-2-5y=-15-2\\\\-5y=-17\qquad\text{divide both sides by (-5)}\\\\\dfrac{-5y}{-5}=\dfrac{-17}{-5}\\\\y=\dfrac{17}{5}[/tex]