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Add 21/15 and 40/49

1st number: 1 6/15, 2nd number: 40/49

21/15 + 40/49 is 543/245.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 49 is 735

    Next, find the equivalent fraction of both fractional numbers with denominator 735
  2. For the 1st fraction, since 15 × 49 = 735,
    21/15 = 21 × 49/15 × 49 = 1029/735
  3. Likewise, for the 2nd fraction, since 49 × 15 = 735,
    40/49 = 40 × 15/49 × 15 = 600/735
  4. Add the two like fractions:
    1029/735 + 600/735 = 1029 + 600/735 = 1629/735
  5. 1629/735 simplified gives 543/245
  6. So, 21/15 + 40/49 = 543/245
    In mixed form: 253/245

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