Lösung 1.2:2c
Aus Online Mathematik Brückenkurs 1
We divide up the two numerators into the smallest possible integer factors,
The expression can thus be written as
Here, we see that the denominators have a factor 2 in common. We multiply the top and bottom of the first fraction by 7 and the second by \displaystyle 2\cdot 3 i.e. we leave out the common factor 2, so that the fractions have the lowest common denominator \displaystyle 2\cdot 2\cdot 3\cdot 7,
The lowest common denominator is 84.
