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The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25