Question 324709
{{{sum((3k+4),k=1,9)=3(1+2+3+4+5+6+7+8+9)+9(4)}}}
{{{sum((3k+4),k=1,9)=3(45)+36}}}
{{{sum((3k+4),k=1,9)=135+363}}}
{{{sum((3k+4),k=1,9)=171}}}