Add 1/28 and 81/20
1st number: 1/28, 2nd number: 4 1/20
1/28 + 81/20 is 143/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
1/28 = 1 × 5/28 × 5 = 5/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Add the two like fractions:
5/140 + 567/140 = 5 + 567/140 = 572/140 - 572/140 simplified gives 143/35
- So, 1/28 + 81/20 = 143/35
In mixed form: 43/35
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