 
 <translate> 13th lati ọtun tumọ si = x + 12 8th láti apá òsì túmọ̀ sí = 7 + x Ìdáhùn tó gbẹ̀yìn: (C). <hau> 13 daga dama yana nufin = x + 12 Na takwas daga hagu yana nufin = 7 + x Jimlar = 12+7+1 = 20 Amsar ƙarshe: (C). 