# Come si cambia  9/12  nella forma più semplice?

3/4

#### Spiegazione:

To express a fraction in color(blue)"simplest form" we need to find a number, the largest is preferable, that divides into both 9 and 12.
In this case the largest number that divides into both is 3.

Now we divide 9 and 12 by 3

rArr9/12=(9÷3)/(12÷3)=3/4" in simplest form"

Usually, the task of dividing both numbers by 3 is performed mentally, stroking out the number and replacing it by the value remaining after division.This is called color(red)"cancelling"

rArr(cancel(9)^3)/(cancel(12)^4)=3/4