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weeeeeb [17]
3 years ago
15

The sum of three numbers is 72

Mathematics
1 answer:
liraira [26]3 years ago
4 0

Answer:

6

Step-by-step explanation:

The first number: a

The second number: b

The third number: c

a+b+c=72

b=7a

b-c=18

⇒a=6; b=42;

c= 24

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