Answer:
[tex] R = \frac {3ST}{2S + T} [/tex]
Step-by-step explanation:
Given the equation;
[tex] \frac {3}{R} - \frac {1}{S} = \frac {2}{T} [/tex]
Rearranging the equation, we have;
[tex] \frac {3}{R} = \frac {2}{T} + \frac {1}{S} [/tex]
Lowest common multiple (LCM) of S and T is ST.
[tex] \frac {3}{R} = \frac {2S + T}{ST} [/tex]
Cross-multiplying, we have;
[tex] 3ST = R(2S + T) [/tex]
Making R, the subject of formula;
[tex] R = \frac {3ST}{2S + T} [/tex]
