Add 21/15 and 54/9
1st number: 1 6/15, 2nd number: 6 0/9
21/15 + 54/9 is 37/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
21/15 = 21 × 3/15 × 3 = 63/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
54/9 = 54 × 5/9 × 5 = 270/45 - Add the two like fractions:
63/45 + 270/45 = 63 + 270/45 = 333/45 - 333/45 simplified gives 37/5
- So, 21/15 + 54/9 = 37/5
In mixed form: 72/5
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