Add 12/9 and 21/5
1st number: 1 3/9, 2nd number: 4 1/5
12/9 + 21/5 is 83/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
12/9 = 12 × 5/9 × 5 = 60/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
21/5 = 21 × 9/5 × 9 = 189/45 - Add the two like fractions:
60/45 + 189/45 = 60 + 189/45 = 249/45 - 249/45 simplified gives 83/15
- So, 12/9 + 21/5 = 83/15
In mixed form: 58/15
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