CREATE TABLE table_28989 ("Proto-Slavic" TEXT, "Russian" TEXT, "Ukrainian" TEXT, "Belarusian" TEXT, "Polish" TEXT, "Czech" TEXT, "Slovak" TEXT, "Slovene" TEXT, "Serbo-Croatian" TEXT, "Bulgarian" TEXT, "Macedonian" TEXT)

When / ruka is the serbo-croatian what is the macedonian?
SELECT "Macedonian" FROM table_28989 WHERE "Serbo-Croatian" = 'рука / ruka'
SELECT "Macedonian" FROM "table_28989" WHERE "Serbo-Croatian" = 'рука / ruka'