Sum of seven

The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.

Correct answer:

a =  11

Step-by-step explanation:


a+(a+2)+(a+4)+(a+6)+(a+8)+(a+10)+(a+12)=119

7a = 77


a = 77/7 = 11

a = 11

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