How do you add a negative fraction and 2 postive fraction with diffrent denomenators
You first have to find a common denominator for all three fractions.
Then, add the two positive fractions and subtract the negative fraction.
Example:
1/2 - 3/4 + 5/6 = 6/12 - 9/12 + 10/12 = 7/12
ex; 6o/10 = 30/5
20/40=10/20