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skelet666 [1.2K]
3 years ago
5

You have to prove it!EVEN IF YOU KNOW ONE OF THEM PLZZZ HELPPP!:(.​

Mathematics
1 answer:
natita [175]3 years ago
7 0

Answer:

xi.) 1 = 1

xii.) 1 + 1 = 2

Step-by-step explanation:

see explanation in attached picture,

i hope it helped.

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