Add 81/28 and 3/30
1st number: 2 25/28, 2nd number: 3/30
81/28 + 3/30 is 419/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
81/28 = 81 × 15/28 × 15 = 1215/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
3/30 = 3 × 14/30 × 14 = 42/420 - Add the two like fractions:
1215/420 + 42/420 = 1215 + 42/420 = 1257/420 - 1257/420 simplified gives 419/140
- So, 81/28 + 3/30 = 419/140
In mixed form: 2139/140
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