I have an expression: $$ \frac{x+z}{y+z} $$
Can I reorganize it so that any variable only appears once?
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2$\frac{x+z}{y+z}=1+\frac{x-y}{y+z}$ – OR. Oct 01 '13 at 18:06
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$\dfrac{x+z}{y+z}=\dfrac{x-y+y+z}{y+z}=1+\dfrac{x-y}{y+z}$ – Leox Oct 01 '13 at 18:09
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Sorry, forgot one thing. See my edit. – user98072 Oct 01 '13 at 18:17
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2Let $w=x+z$, then you have $w\over y+z$. – abiessu Oct 01 '13 at 18:30
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Without using any new variable names. – user98072 Oct 01 '13 at 18:41
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NO, (sorry i need to add some more text) – Willemien Oct 02 '13 at 21:56