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That is correct.
Simplify them.
The common denominator for 9 and 13 is the product of the two numbers, which is 9 * 13 = 117. In fractions, the denominator represents the total number of equal parts into which a whole is divided. When adding or subtracting fractions, it is necessary to have a common denominator to combine the fractions accurately.
all you have to do is follow the same algorithm for adding a pair of fractions together. the main step is to find common denominators between the two. to do this, you need to find the least common multiple. another way you could find a common denominator is just by changing them into decimals, and adding them normally like whole numbers with the decimals lined up correctly.
The symbols used for counting in math are called numbers, or numerals. They can be whole numbers, or fractions of parts of a number.