2-Z-1-a-1-b-Z-help-

Question Number 167722 by SAMIRA last updated on 23/Mar/22

\frac{2}{Z} = \frac{1}{a} + \frac{1}{b}

Z = ? ? ? h e l p

Commented by MJS_new last updated on 23/Mar/22

law of adding fractions

\frac{o}{p} + \frac{q}{r} = \frac{o \times r}{p \times r} + \frac{p \times q}{p \times r} = \frac{o \times r + p \times q}{p \times r}

\frac{2}{Z} = \frac{1}{a} + \frac{1}{b}

\frac{2}{Z} = \frac{a + b}{a \times b}

\frac{Z}{2} = \frac{a \times b}{a + b}

Z = \frac{2 \times a \times b}{a + b}

Answered by pnuvu last updated on 23/Mar/22

Z = \frac{2 a b}{a + b}

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