Answer
$30,20,10,0,-10,-20$
Work Step by Step
Formula to calculate the nth term of an arithmetic sequence is: $a_n=a_1+d(n-1)$
Here, $a_1: $ First term and $d=$ common difference
Since, we have $a_1=30$
Use a recursion formula to find the remaining five terms.
Then $a_2=a_1-10=30-10=20;\\a_3=a_2-10=30-20=10;\\a_4=a_3-10=10-10=0;\\a_5=a_4-10=0-10=-10;\\a_6=a_5-10=-10-10=-20$
Hence, the first six terms are: $30,20,10,0,-10,-20$
