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Marianna [84]
3 years ago
7

Hey please help i’ll give brain

Mathematics
2 answers:
anygoal [31]3 years ago
7 0

Answer:

81-1 nine

90-81

9

Step-by-step explanation:

Brilliant_brown [7]3 years ago
7 0

Answer:

9 \times 9 = 10nines - 1nine \\ 9 \times 9 = 90 - 9 \\ 9 \times 9 = 81 \\ thank \: you

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