Respuesta:
1) 9x4=4x9
36=36
2)9x8=8x9
72=72
3). (2x4)x5=2(5x4)
40 = 40
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Verified answer
Respuesta:
1) 9x4=4x9
36=36
2)9x8=8x9
72=72
3). (2x4)x5=2(5x4)
40 = 40