Add 54/15 and 7/28
1st number: 3 9/15, 2nd number: 7/28
54/15 + 7/28 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
54/15 = 54 × 28/15 × 28 = 1512/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
7/28 = 7 × 15/28 × 15 = 105/420 - Add the two like fractions:
1512/420 + 105/420 = 1512 + 105/420 = 1617/420 - 1617/420 simplified gives 77/20
- So, 54/15 + 7/28 = 77/20
In mixed form: 317/20
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