3 years ago

PLEASE ANSWER I WILL GIVE 30 POINTS!

Mathematics

1 answer:

Bingel [31]3 years ago

4 0

Answer:

So the correct answer is"none of the above".

Step-by-step explanation:

z+(z+6)=z+z+6=2z+6. \\ \\ (z+z)+(z+6)=z+z+z+6=3z+6. \\ \\ (z+6)+6=z+12 \\ \\

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