Yasm ebe How to Add to an Indexed Value of an Array

Question

First Part of the Lab

Second Part of the Lab

Hello! I am confused on how to add to a value of an array in ebe. I've tried some different ways, but all resulted in an error that stated: "invalid combination of opcode and operands"

        segment .data
a       dw      -4, 22, 144
b       db      -3, -16, 12
c       dw      -3
result  dq      0

         segment .text
         global main
main:
    add     a, c
    ret

This was one of my attempts, I am trying to add -3 to an indexed value of array a, but I am just stuck on how to actually do this. Please help!