Rearranging Harder Formulae

63%

Make $b\,$ the subject of the formula $1a=1b+1c\displaystyle \frac{1}{a} = \frac{1}{b} + \frac{1}{c}$

[4]

63%

Make $b\,$ the subject of the formula $1a=1b+1c\displaystyle \frac{1}{a} = \frac{1}{b} + \frac{1}{c}$

[4]

Rearranging Harder Formulae Questions