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Add 2/21 and 27/72

2/21 + 27/72 is 79/168.

Steps for adding fractions

  1. 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
  2. For the 1st fraction, since 21 × 24 = 504,
    2/21 = 2 × 24/21 × 24 = 48/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    27/72 = 27 × 7/72 × 7 = 189/504
  4. Add the two like fractions:
    48/504 + 189/504 = 48 + 189/504 = 237/504
  5. 237/504 simplified gives 79/168
  6. So, 2/21 + 27/72 = 79/168

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