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love history [14]
3 years ago
6

Please help w this 15 points ​

Mathematics
1 answer:
Kruka [31]3 years ago
6 0

Answer:

28

Step-by-step explanation:

P(red marbles) = 3/7

no. if red marbles = 12

12/x = 3/7

3x = 12 x 7

3x = 84

x = 28

the total number of marbles are 28.

hope it helps .

all the best

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