A=1/2(b-c) make the subject b

b = 2A+c

Step-by-step explanation:

A = (b-c)/2

Multiplying both sides by 2

=> 2A = b-c

Adding c to both sides

=> 2A+c = b

OR

=> b = 2A+c

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the answer is 0.3175 hope that you ^w^

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