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Add 90/7 and 21/72

1st number: 12 6/7, 2nd number: 21/72

90/7 + 21/72 is 2209/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 7 × 72 = 504,
    90/7 = 90 × 72/7 × 72 = 6480/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    21/72 = 21 × 7/72 × 7 = 147/504
  4. Add the two like fractions:
    6480/504 + 147/504 = 6480 + 147/504 = 6627/504
  5. 6627/504 simplified gives 2209/168
  6. So, 90/7 + 21/72 = 2209/168
    In mixed form: 1325/168

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