Add 81/72 and 80/7
1st number: 1 9/72, 2nd number: 11 3/7
81/72 + 80/7 is 703/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 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 7 × 72 = 504,
80/7 = 80 × 72/7 × 72 = 5760/504 - Add the two like fractions:
567/504 + 5760/504 = 567 + 5760/504 = 6327/504 - 6327/504 simplified gives 703/56
- So, 81/72 + 80/7 = 703/56
In mixed form: 1231/56
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