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Maths-

General

Easy

Question

$fraction numerator r subscript 1 end subscript over denominator b c end fraction$ + $fraction numerator r subscript 2 end subscript over denominator c a end fraction$ + $fraction numerator r subscript 3 end subscript over denominator a b end fraction$ =

$\frac{1}{2 R}$ – $\frac{1}{r}$
2R – r
r – 2R
$\frac{1}{r} - \frac{1}{2 R}$

The correct answer is: $fraction numerator 1 over denominator r end fraction minus fraction numerator 1 over denominator 2 R end fraction$

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