Respuesta :

alamoodihamda

Answer:

yes

Step-by-step explanation:

a= -5

d= -2 -(-5)=3

so, 343 = a + (n-1) 3

343 = -5 (n-1) 3

343 = -5 + 3n - 3

343 = 3n

n = 117

hope this helped
Yes hope this helps. Have a good day