10/2+1/2 - 12/6+1/6. -> change the 5 and 6 to fractions
= 11/2 - 13/6. -> add up
= 33/6 -13/6. -> multiply the first fraction by 3 so.
that you have the same denominators
= 20/6. -> subtract
= 10/3
= 9/3 +1/3
= 3 1/3
1.6m questions
2.0m answers