@Adri vanderMeer van der Meer 

Thank you, this one is working just fine!

By manipulating symbols i mean that when i substitute any number into formulae i cannot say nothing about their proportionality since there always exists some number which interelates one another. Just like Carlo mentioned in his example.

Thanks again for the reply!

@Adri vanderMeer van der Meer 

Thank you, this one is working just fine!

By manipulating symbols i mean that when i substitute any number into formulae i cannot say nothing about their proportionality since there always exists some number which interelates one another. Just like Carlo mentioned in his example.

Thanks again for the reply!