Add 1/72 and 1/21
1/72 + 1/21 is 31/504.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
1/72 = 1 × 7/72 × 7 = 7/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
1/21 = 1 × 24/21 × 24 = 24/504 - Add the two like fractions:
7/504 + 24/504 = 7 + 24/504 = 31/504 - So, 1/72 + 1/21 = 31/504
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