Answer:
1000
Step-by-step explanation:
x = 1, y = -1, and z = 2
The sum of an alternating geometric series SUM((-1)^n*ar^n) = a/(1+r). The given series has r=2/3 and a=1. The sum will be 1/(1+2/3)= 3/5
here you go
i hope this helps