Question

Add/Subtract: Simplify and state the domain. .

Answer 1

Add/Subtract, simplified:

Picture below is simplified / evaluated

Step-by-step explanation for the domain:

Find the domain by finding where the expression is defined.

Interval Notation:

(−∞,0)∪(0,7)∪(7,∞)

Set-Builder Notation:

{x|x≠0,7}