# Sequence

Write the first 7 members of an arithmetic sequence: a1=-3, d=6.

Correct result:

a1 =  -3
a2 =  3
a3 =  9
a4 =  15
a5 =  21
a6 =  27
a7 =  33

#### Solution:

$a_1 = -3$
$a_2 = a_1+6 = 3$
$a_3 = a_2+6 = 9$
$a_4 = a_3+6 = 15$
$a_5 = a_4+6 = 21$
$a_6 = a_5+6 = 27$
$a_7 = a_6+6 = 33$

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