Mathematics, 28.07.2019 17:10 smithsa10630

Why is the sum of two rational numbers always rational? select from the drop-down menus to correctly complete the proof. let ab and cd represent two rational numbers. this means a, b, c, and d are , and . the sum of the numbers is ad+bcbd , where bd is not 0. because integers are closed under , the sum is the ratio of two integers, making it a rational number.

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Why is the sum of two rational numbers always rational? select from the drop-down menus to correctl...