 
<translate> Nke iri na atọ site n'aka nri pụtara = x + 12 Nke asatọ site n'aka ekpe pụtara = 7 + x Ngụkọta = 12 + 7 + 1 = 20 Azịza ikpeazụ bụ: (C). <eng> 13th from right means = x + 12
8th from left means = 7 + x
Total = 12+7+1 = 20 The final answer: (C). 