Add 27/72 and 12/21
27/72 + 12/21 is 53/56.
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,
27/72 = 27 × 7/72 × 7 = 189/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
12/21 = 12 × 24/21 × 24 = 288/504 - Add the two like fractions:
189/504 + 288/504 = 189 + 288/504 = 477/504 - 477/504 simplified gives 53/56
- So, 27/72 + 12/21 = 53/56
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