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Start the planA. \(\dfrac{(a-3b)}{2}\)
B. \(\dfrac{(a+3b)}{2}\)
C. \(\dfrac{(2a+b)}{2}\)
D. \(\dfrac{(2a-b)}{2}\)
E. \(\dfrac{(3a+b)}{2}\)
The OA is B













