Prove Lemma 1.4.5 (1) Lemma... Exercise 1.4.1. [Used in Lemma 1.4.5.] Prove Lemma 1.4.5 (1) Lemma 1.4.5. Let x, y, z ∈ Z

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answerhappygod
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Prove Lemma 1.4.5 (1) Lemma... Exercise 1.4.1. [Used in Lemma 1.4.5.] Prove Lemma 1.4.5 (1) Lemma 1.4.5. Let x, y, z ∈ Z

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Prove Lemma 1.4.5 (1) Lemma... Exercise 1.4.1. [Used in Lemma1.4.5.] Prove Lemma 1.4.5 (1) Lemma 1.4.5. Let x, y, z ∈ Z. If x +z = y + z, then x = y (Cancellation Law for Addition)
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