Question: Please complete parts a & b and show all work! Thanks! 5. Contradiction Use proof by contradiction to show that: (a) There exist no integers

Please complete parts a & b and show all work! Thanks!

5. Contradiction Use proof by contradiction to show that: (a) There exist no integers a and b for which 18a +6b-1 (b) Prove that if a and b are rational num bers, b0 and r is an irrational number then a + br is irrational

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