1)a10=a1+d(n-1)=-3+2,5(10-1)=19,5
2)a9=a1+d(n-1)=6+14(9-1)=118
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1)a10=a1+d(n-1)=-3+2,5(10-1)=19,5
2)a9=a1+d(n-1)=6+14(9-1)=118