7x - 5y + 7z, 2x + 7y - 3z, 8x + 2y - 3z এর যোগফল কত?

A  17x + 4y - z

B    17x + 4y + z   

C 17x - 4y + z  

D 17x - 4y - z 

Solution

Correct Answer: Option B

7x - 5y + 7z
2x + 7y - 3z
8x + 2y - 3z
-----------------------
17x + 4y + z

নির্ণেয় যোগফল : 17x + 4y + z

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