Exercise No. 7A

Note: Answers to all questions are given at the end of this exercise.

Question No. 1:
Find the solution of each of the following equations by observation:

 

Note: Answers to all questions are given at the end of this exercise.

Question No. 2:
If a is an integer, find the possible solutions, if any for each of the following by the conversation.


Answers

(from left to right)

7a-i 7a-ii 7a-iii

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