Respuesta :

t= -15 over 2 

use the website mathpapa.com
8t + 9/2 + t + 6/2 = -15

8t + t + 9/2 + 6/2 = -15

9t + (9 + 6)/2 = -15

9t + 15/2 = -15

9t = -15 - 15/2

9t = -15 - 7.5

9t = -22.5

t = -22.5/9

t = -2.5