Question

9 3 (30) 7 2 , 4 2 (4) 3 1 , 10 3 (x) 6 3 , halle el valor de x

Answer 1

93 ( 30 ) 72  => (9 - 3)(7 - 2) = 30

42 ( 4 ) 31 => (4 - 2)(3 - 1) = 4

103 ( x ) 63 => (10 - 3)(6 - 3) = x   ------>  x = 21

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eso es todo :D

SALUDOS!!