Question

Which expressions are equivalent to z+(z+6)

Select:
(z+z) + (z+6)
(z+6) +6
2(z+3)

Answer 1

2(z+3) thats the answer

Answer 2

2(z+3)

Explanation:

z+ (z+6)

combine like terms

=2z+6

factor out a 2

=2(z+3)

(z+z) + (z+6) = 3z+6 so no

(z+6) +6 = z+12 so no