Add 1/28 and 81/30
1st number: 1/28, 2nd number: 2 21/30
1/28 + 81/30 is 383/140.
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,
1/28 = 1 × 15/28 × 15 = 15/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
81/30 = 81 × 14/30 × 14 = 1134/420 - Add the two like fractions:
15/420 + 1134/420 = 15 + 1134/420 = 1149/420 - 1149/420 simplified gives 383/140
- So, 1/28 + 81/30 = 383/140
In mixed form: 2103/140
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