Question

tolong jawaban beserta cara kerjanya​

Answer 1

Jawaban:

A.

Penjelasan:

[tex] \dfrac{1}{z} = \dfrac{1}{x} - \dfrac{1}{y} [/tex]

[tex] \dfrac{1}{z} + \dfrac{1}{y} = \dfrac{1}{x}[/tex]

[tex] \dfrac{1}{x} = \dfrac{1}{z} + \dfrac{1}{y}[/tex]

[tex] \dfrac{1}{x} = \dfrac{1.y}{z.y} + \dfrac{1.z}{y.z}[/tex]

[tex] \dfrac{1}{x} = \dfrac{y}{zy} + \dfrac{z}{yz}[/tex]

[tex] \dfrac{1}{x} = \dfrac{y + z}{yz}[/tex]

[tex]x = \dfrac{y + z}{yz} \div 1[/tex]

[tex]x = \dfrac{yz}{y+z} \times 1[/tex]

[tex]x = \bold{ \dfrac{yz}{y+z}}[/tex]

Jawabannya A.