Question

-5n and 8n + 7 - Add the given expressions.

Answer 1

According to the question, we have to add the expressions: (-5n) and (8n + 7).

Out of the two terms (-5n) and (8n + 7) it is evident that the constant doesn't have a pair to be added with but the term -5n has a similar term 8n to be added with.

Hence after adding the two similar terms: (-5n) and (8n) first, we get 8n - 5n = 3n.

Now we are left to add with the constant and the sum i.e. 3n and 7

So, we get 3n + 7. Since there are no common terms in between so we cannot further resolve it.

Therefore, on adding (-5n) and (8n + 7) we get (3n + 7) [Ans]

Answer 2

Given two expressions are

-5n , 8n + 7

Addition of given expressions

= -5n + 8n + 7

= 3n + 7

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