Question

Hallar x en:
12 (9) 21
23 (30) 33
34 (x) 105

Answer 1

Explicación paso a paso:

Resolviendo:

Fila 1 => (1 + 2)(2 + 1) => 3*3 => 9  

Fila 2 => (2 + 3)(3 + 3) => 5*6 => 30

Fila 3 => (3 + 4)(1 + 0 + 5) => 7*6 => 42 = x <------------ Respuesta

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