CREATE TABLE table_43474 ("Sn/Sb  ( % ) " TEXT, "Liquidat  ( \\u00b0C ) " FLOAT, "Solidat  ( \\u00b0C ) " FLOAT, "Hardness  (  Brinell  ) " FLOAT, "Purpose" TEXT)

When the Sn/Sb (%) of 13/17, and a Liquidat (c) bigger than 283 what's the solidat (c)?
SELECT SUM("Solidat (\u00b0C)") FROM table_43474 WHERE "Sn/Sb (%)" = '13/17' AND "Liquidat (\u00b0C)" > '283'
SELECT SUM("Solidat (\u00b0C)") FROM "table_43474" WHERE "Liquidat (\u00b0C)" > '283' AND "Sn/Sb (%)" = '13/17'