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Novosadov [1.4K]
3 years ago
8

R-12 evaluate if r= 7

Mathematics
2 answers:
Irina18 [472]3 years ago
7 0
The answer should be-5
lara [203]3 years ago
4 0

r-12
substitute in r=7
so 7-12 = -5

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see explanation

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