Respostas

2013-06-05T18:49:49-03:00

A) -6 x 2 = 12; -4 x 3 = -12

B)-4 x 9 = 36; -18 x 2 = -36

C)-2 x 10 = 20; -4 x 5 = - 20; -10 x 2 = -20

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