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Add 21/56 and 50/72

21/56 + 50/72 is 77/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 56 × 9 = 504,
    21/56 = 21 × 9/56 × 9 = 189/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    50/72 = 50 × 7/72 × 7 = 350/504
  4. Add the two like fractions:
    189/504 + 350/504 = 189 + 350/504 = 539/504
  5. 539/504 simplified gives 77/72
  6. So, 21/56 + 50/72 = 77/72
    In mixed form: 15/72

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