What is the first thing you need to do to add 1/9 5/6
To add 1/9 and 5/6, the first thing you need to do is find a common denominator for both fractions. The common denominator is the lowest common multiple of the denominators, which is the smallest number that both denominators can divide into evenly.
To find the common denominator, you can use the fact that any whole number such as 1, 2, 3, etc., can be written as a fraction with a denominator of 1. In this case, the denominators are 9 and 6. The multiples of 9 are 9, 18, 27, 36, etc., and the multiples of 6 are 6, 12, 18, 24, 30, 36, etc.
Looking at the lists of multiples, you can see that the first common multiple is 18. Therefore, 18 is the common denominator for 1/9 and 5/6.
Now that you have a common denominator, you can proceed to add the fractions.