12/17 + 9/17 as a fraction

Learn how to find what is 12/17 plus 9/17 in fraction form just in a few minutes. We have covered the easiest method to write 12/17 + 9/17 as a fraction and decimal.

Summary: 12/17 plus 9/17 = 21/17
Since both fractions have equal/common denominator, 12/17 plus 9/17 is a like fractions addition. Adding fractions with common denominator like 12/17 and 9/17, and expressing it in the fraction form is a very simple process. For like fraction addition, directly add the numerators (12 + 9) together while keeping the common denominator as it is. You may wonder why the numerators alone are being added and not the denominators in the expression (12/17) + (9/17). Because we can take common denominators out when simplifying the fraction addition expression (12/17) + (9/17), so the expression becomes 1/17 (12 + 9). By simplifying further, the numerator becomes (12 + 9) = 21, and the denominator remains the same as 17. Therefore, 12/17 + 9/17 as a fraction is 21/17.

CALCULATION: 12/17 + 9/17 as a fraction
12/17 + 9/17 = (?)
12/17 + 9/17 = (12 + 9)/17
= 21/17
12/17 + 9/17 = 21/17
12/17 plus 9/17 as a fraction is 21/17.

where
12/17 is a proper fraction as an addend,
9/17 is a proper fraction as an addend,
21/17 is the sum of 12/17 and 9/17.

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12/17 plus 9/17 as a decimal
12/17 + 9/17 = 21/17
21/17 = 1.2353
(12/17) + (9/17) as a decimal is 1.2353

where
1.2353 is the sum of 12/17 and 9/17.