The sum of 3 consecutive odd numbers is 51. What is the second number in this sequence?

1 answer:

Feliz [49]3 years ago

4 0

$2n+1+2n+3+2n+5=51\\
6n+9=51\\
6n=42\\
n=7\\\\
2n+3=2\cdot7+3=17$

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