
theorem Th288:
Sum digits(95,10) = 14
proof
  thus Sum digits(95,10) = Sum <%5%>+Sum <%9%> by Th287,AFINSQ_2:55
  .= 5 + Sum <%9%> by AFINSQ_2:53
  .= 5+9 by AFINSQ_2:53
  .= 14;
end;
