[tex] \frac{1}{2} - \frac{5}{6} = \frac{3}{6} - \frac{5}{6} = - \frac{2}{6} \\ \\ = - \frac{1}{3} + \frac{1}{4} = - \frac{4}{12} + \frac{3}{12} = - \frac{1}{12} [/tex]
There are denominator equalizations in between :)
I hope I got it right, I'm trying to improve my English a little :)
Greetings from Turkey:)
#XBadeX
