We are given 15-7 here and we have to express it as sum.
Let us first understand the property to be use here.
We can write (a-b) as (a+(-b))
For example:
If we have 7-2, we can rewrite it as 7+(-2)
and then we can combine them to get 5
Now let us use the above property for our question,
We are given,
15-7
rewriting it as addition,
15+(-7)
+ and - on multiplication will be (-)
so +(-7) will remain -7 only
Answer: 15-7 = 15+(-7)
