Math, asked by 70067010, 9 months ago

Prove the following statements using direct and Contradiction proof.

b- If 7x+9 is even, then x is odd.

Answers

Answered by Deathchancellor
1

Answer: Here is a contrapositive proof of the same statement: Proposition Suppose x ∈ Z. If 7x+9 is even, then x is odd. ... Therefore 7x+9 = 2b+1, where b is the integer 7a+4. Consequently 7x+9 is odd.

Answered by bananakit
0

Answer:

Step-by-step explanation:

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