How do you solve this problem. Answer must be simplifyed

Question

4/5+5/6-3/10

Answer 1

When adding and subtracting fractions, first find the common denominator.

http://www.mathsisfun.com/numbers/common-denominator.html

4/5 = 24/30
5/6 = 25/30
3/10 = 9/30

49/30 - 9/30 = 40/30 = 1 10/30 = 1 1/3