Respuesta:
1) 9 x 2 + 3 x 1 = 21
2) 7 x 5 + 3 x 2 = 41
3) 9 x 4 + 5 x 3 = 51
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Respuesta:
1) 9 x 2 + 3 x 1 = 21
2) 7 x 5 + 3 x 2 = 41
3) 9 x 4 + 5 x 3 = 51