Add 54/15 and 21/5
1st number: 3 9/15, 2nd number: 4 1/5
54/15 + 21/5 is 39/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 15 × 1 = 15,
54/15 = 54 × 1/15 × 1 = 54/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
21/5 = 21 × 3/5 × 3 = 63/15 - Add the two like fractions:
54/15 + 63/15 = 54 + 63/15 = 117/15 - 117/15 simplified gives 39/5
- So, 54/15 + 21/5 = 39/5
In mixed form: 74/5
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