Respuesta:
39 x 4=156
Explicación paso a paso:
= ( 21 + 9) x 4
= (30 x 4) + (9 x 4)
= 120 + 36
= 156
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Respuesta:
39 x 4=156
Explicación paso a paso:
= ( 21 + 9) x 4
= (30 x 4) + (9 x 4)
= 120 + 36
= 156