Question

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

Answer 1

Answer: $2 z + 6$ and $2 (z + 3)$

Step-by-step explanation:

We have te following expression:

$z+(z+6)$

Which can be written as:

$z+z+6=2z+6$

Applying common factor 2 in the right side of the equation:

$z+z+6=2(z+3)$