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hartnn
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There's no equation to solve,
5/x  7/y is an expression

Christos
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I ment I need to make them one division :P

hartnn
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ohh, common denominator ?

Christos
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yeA

hartnn
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tried it ?

Christos
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with no avail :(

hartnn
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dw:1362339997837:dw

hartnn
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do similar thing for 5/x  7/y

hartnn
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what will you multiply 5/x by ?
to make te common denominator of xy ?

some_someone
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\[\frac{ 5 }{ x }\frac{ 7 }{ y } = 0\]
\[y = \frac{ 7x }{ 5 }\]
\[x \neq 0 \]