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Three Equations, Three Unknowns.

  • #1

Homework Statement



But somehow not that simple..

[tex]\frac{5xy}{x+y}[/tex] [tex]=6\left.[/tex]

[tex]\frac{7yz}{y+z}[/tex] [tex]=10\left.[/tex]

[tex]\frac{8zx}{z+x}[/tex] [tex]=15\left.[/tex]

Homework Equations





The Attempt at a Solution



Tried and failed.
 

Answers and Replies

  • #2
epenguin
Homework Helper
Gold Member
3,717
754
Looks like if you turned the equations upside down you have something easy to solve.

I think they want you to see that, although you could no doubt slog it out by cross multiplying and eliminating.
 

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