Add 81/21 and 2/72
1st number: 3 18/21, 2nd number: 2/72
81/21 + 2/72 is 979/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
81/21 = 81 × 24/21 × 24 = 1944/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
2/72 = 2 × 7/72 × 7 = 14/504 - Add the two like fractions:
1944/504 + 14/504 = 1944 + 14/504 = 1958/504 - 1958/504 simplified gives 979/252
- So, 81/21 + 2/72 = 979/252
In mixed form: 3223/252
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