SOLUTION: Solve the equation A = 1/2(b + B) for B Totally lost on this problem. Can someone help me please.

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Question 113511: Solve the equation



A = 1/2(b + B) for B

Totally lost on this problem. Can someone help me please.
Found 2 solutions by checkley71, solver91311:
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
A=1/2(b+B)
A=(b+B)/2 CROSS MULTIPLY.
2A=b+B SUBTRACT b FROM BOTH SIDES.
B=2A-b ANSWER.

Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
A=%281%2F2%29%28b%2BB%29

First multipy both sides by 2.

2A=2%28%281%2F2%29%28b%2BB%29%29
2A=b%2BB

Now add -b to both sides.

2A-b=b-b%2BB
2A-b=B

Then, just to be neat and so the statement reads naturally, turn it around so that the B is on the left.

B=2A-b

Done.

Hope this helps.
John