Solve for the Indicated Variable $\frac { 1 } { A } = \frac { 1 } { B } + \frac { 1 } { C }$

question 239

Multiple Choice

Solve for the indicated variable.
- $\frac { 1 } { A } = \frac { 1 } { B } + \frac { 1 } { C }$ , for $A$

• A) \(A = 4 + B + C\)
• B) \(A = \frac { B } { B + C }\)
• C) \(\mathrm { A } = \frac { \mathrm { B } - \mathrm { C } } { \mathrm { BC } }\)
• D) \(A = \frac { B C } { B + C }\)