Teori

$\dfrac{1}{b}\cdot a

\dfrac{a}{b} $= O m e t t b r \overset{a}{˚} k m e d t \overset{a}{¨} l j a r e n$ 1 $m u l t i p l i c e r a s m e d e t t t a l k a n m a n e r s \overset{a}{¨} t t a t \overset{a}{¨} l j a r e n m e d t a l e t . D e t t a b e r o r p \overset{a}{˚} a t t m a n m u l t i p l i c e r a r t a l e t m e d$ 1$: $\frac{1}{3} \cdot 2 = \frac{1 \cdot 2}{3} = \frac{2}{3} .$