64−31−121=
Let's try to find the lowest common denominator between 6, 3, and 12
To find the lowest common denominator, we need to find a number that is divisible by 6, 3, and 12
In this case, the common denominator is 12
Now we'll multiply each fraction by the appropriate number to reach the denominator 12
We'll multiply the first fraction by 2
We'll multiply the second fraction by 4
We'll multiply the third fraction by 1
Now let's subtract:
Let's divide both numerator and denominator by 3 and we get: