Question

Add the following using horizontal method

i.)abc,-2abc,4abc

ii.)8xz,-2xz,-6xz

Answer 1

What the other guy said :D

Answer 2

i - 3abc

ii - 0

Explanation:

i- abc,-2abc= -abc (think of it as 1-2)

-abc,+4abc=3abc (-1+4)

ii- 8xz,-2xz=6xz (8-2)

6xz,-6xz=0 (6-6)