Add 81/72 and 30/28
1st number: 1 9/72, 2nd number: 1 2/28
81/72 + 30/28 is 123/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 28 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
81/72 = 81 × 7/72 × 7 = 567/504 - Likewise, for the 2nd fraction, since 28 × 18 = 504,
30/28 = 30 × 18/28 × 18 = 540/504 - Add the two like fractions:
567/504 + 540/504 = 567 + 540/504 = 1107/504 - 1107/504 simplified gives 123/56
- So, 81/72 + 30/28 = 123/56
In mixed form: 211/56
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