Table schema:
CREATE TABLE table_name_46 (solidat__ INTEGER, sn_sb___percentage_ VARCHAR, liquidat__°c_ VARCHAR)

Question: When the Sn/Sb (%) of 13/17, and a Liquidat (c) bigger than 283 what's the solidat (c)?
SQL: SELECT SUM(solidat__) AS °c_ FROM table_name_46 WHERE sn_sb___percentage_ = "13/17" AND liquidat__°c_ > 283