Question

what is the answer of 6−a+(2+a)?(simplified)

Answer 1

6+2-a+a
8
The answer is 8

Answer 2

$6-a+(2+a) : | \text{Simplify}$ 

$6-a+2+a : | \text{Simplify brackets}$ 

$(6+2)+(-a+a)$ 

$=8$