Respuesta :
answer: c
use distributive property:
2(a+6)-3(a-5)+15=18
2a+12-3a+15=18
combine like terms:
2a+12-3a+15=18
-a+27=18
use distributive property:
2(a+6)-3(a-5)+15=18
2a+12-3a+15=18
combine like terms:
2a+12-3a+15=18
-a+27=18