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a) 2 X 3 = 6
3 X 2 = 6
b) 5 X 4 = 20
4 X 5 = 20
c) a + b + c + d = P
b + a + d + c = P
d) 100 - 50 + 50 = 100
50 + 100 -50 = 100
Espero haberle ayudado