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the average of 7 consecutive even numbers is 42. what is the smallest number?

Sagot :

x = first even number
x + 2 = second even number
x + 4 = third even number
...
x + 12 = seventh even number

x + x +2 + x + 4... + x + 12 = 42
7x + 42 = 42
[tex] \frac{7x}{7} = \frac{0}{7} [/tex]
x = 0

0 + 2 + 4 ... + 12 = 42

ANSWER: 0