Ok so the first step to solve it is subtraction then it’s multiplication then additions
Answer:

Step-by-step explanation:
Given:
The attached
Required
Find the equivalent expression
The interpretation of is to add the sequence:
n = 1,2,3,......35
This can be done using the following formula (Sum of n terms of an AP)

Where n is the number of terms from 1 to 35; 
T1 is the first term; 
Tn is the last term; 
becomes


From the list of given options;
Option A is correct

what's the question you need help on