Question

CALCULAR "A" SI: 1A3(4)=30(9)

Answer 1

30 en base 9 a base 10 = 3(9)+ 0 = 27
1A3 en base 4 a base 10 = 1(4)² + 4A + 3 = 16 + A + 3 =19+4A 

igualando:  19 + 4A = 27
                         4A = 8
                          A = 2

Answer 2

Respuesta:

30 en base 9 a base 10 = 3(9)+ 0 = 27

1A3 en base 4 a base 10 = 1(4)² + 4A + 3 = 16 + A + 3 =19+4A  

19 + 4A = 27

        4A = 8

          A = 2