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Add 2/21 and 18/72

2/21 + 18/72 is 29/84.

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,
    18/72 = 18 × 7/72 × 7 = 126/504
  4. Add the two like fractions:
    48/504 + 126/504 = 48 + 126/504 = 174/504
  5. 174/504 simplified gives 29/84
  6. So, 2/21 + 18/72 = 29/84

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