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horrorfan [7]
3 years ago
7

21-m=9 anyone know this ?

Mathematics
2 answers:
prisoha [69]3 years ago
6 0

Answer:

m=12

Step-by-step explanation:

21-m=9

-m=9-21

-m=-12

m=12

lord [1]3 years ago
4 0

Answer:

12

Step-by-step explanation:

21-m=9

21-9=12

m=12

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