Add 81/28 and 72/45
1st number: 2 25/28, 2nd number: 1 27/45
81/28 + 72/45 is 629/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
81/28 = 81 × 45/28 × 45 = 3645/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
72/45 = 72 × 28/45 × 28 = 2016/1260 - Add the two like fractions:
3645/1260 + 2016/1260 = 3645 + 2016/1260 = 5661/1260 - 5661/1260 simplified gives 629/140
- So, 81/28 + 72/45 = 629/140
In mixed form: 469/140
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