Add or Subtract Fractions. Simplify your answer if needed.
2/3 - 1/2 =
3/5
3/6
1/2
1/6
3/5 + 2/10 =
4/5
8/10
5/10
1 3/6 + 2 1/3
5/6
3 5/6
1 1/6
3 4/9