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Solve for b A= \frac{a+b}{2}
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5 votes
Solve for b A= \frac{a+b}{2}

User Marton Sagi
by
7.9k points

1 Answer

2 votes
A = (a+b)/2
2*A = 2*(a+b)/2 ... multiply both sides by 2
2A = a+b
2A-a = a+b-a ... subtract 'a' from both sides to isolate b
2A-a = b
b = 2A-a

Answer: b = 2A-a

User Andrew Jay
by
8.5k points
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