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Tanya [424]
4 years ago
10

Help Me Pleasee ❗❗❗​

Mathematics
1 answer:
N76 [4]4 years ago
8 0

Answer:

answer is 69....

Step-by-step explanation:

21 + ? = 90 ( Being straight angle )

or , ? = 90 - 21

or,. ? = 69 ........

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