12/5 + 9/5 as a fraction

Learn how to find what is 12/5 plus 9/5 in fraction form just in a few minutes. We have covered the easiest method to write 12/5 + 9/5 as a fraction and decimal.

Summary: 12/5 plus 9/5 = 21/5
Since both fractions have equal/common denominator, 12/5 plus 9/5 is a like fractions addition. Adding fractions with common denominator like 12/5 and 9/5, 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 (12/5) + (9/5). Because we can take common denominators out when simplifying the fraction addition expression (12/5) + (9/5), so the expression becomes 1/5 (12 + 9). By simplifying further, the numerator becomes (12 + 9) = 21, and the denominator remains the same as 5. Therefore, 12/5 + 9/5 as a fraction is 21/5.

CALCULATION: 12/5 + 9/5 as a fraction
12/5 + 9/5 = (?)
12/5 + 9/5 = (12 + 9)/5
= 21/5
12/5 + 9/5 = 21/5
12/5 plus 9/5 as a fraction is 21/5.

where
12/5 is a improper fraction as an addend,
9/5 is a improper fraction as an addend,
21/5 is the sum of 12/5 and 9/5.

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12/5 plus 9/5 as a decimal
12/5 + 9/5 = 21/5
21/5 = 4.2
(12/5) + (9/5) as a decimal is 4.2

where
4.2 is the sum of 12/5 and 9/5.