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solmaris [256]
3 years ago
12

The sum of three consecutive odd integers is –15. What are the numbers?

Mathematics
1 answer:
liberstina [14]3 years ago
3 0
Odd numbers are represented as 2n+1 where 2 is a natural number ( negative and possitive whole numbers)

consecutive odd numbers are 2 away from each other so 3 consecutive odd numbers would be
(2n+1),(2n+1+2),(2n+1+2+2)
the all add to -15 so they must all be negative
2n+1+2n+1+2+2n+1+2+2=-15
add like terms
6n+9=-15
subtract 9 from both sides
6n=-24
divide both sides by 6
n=-4
subsitute
first number=2n+1=2(-4)+1=-8+1=-7
second number=2n+1+2=2(-4)+3=-8+3=-5
third number=2n+1+2+2=-8+5=-3

the numbers are -7,-5, -3
the answe ris B
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