soobin97 soobin97

20-03-2021
Mathematics

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Please help me quickly

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Respuesta :

alissiaking alissiaking

20-03-2021

Answer:

for number 7 it's 21+9=30

21-9=12

Answer Link

shelbym9305 shelbym9305

20-03-2021

Answer:

The two numbers are 18 and 12

Step-by-step explanation:

30-18= 12

18+12= 30

Answer Link

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