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Add 21/40 and 60/7

1st number: 21/40, 2nd number: 8 4/7

21/40 + 60/7 is 2547/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 40 × 7 = 280,
    21/40 = 21 × 7/40 × 7 = 147/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    60/7 = 60 × 40/7 × 40 = 2400/280
  4. Add the two like fractions:
    147/280 + 2400/280 = 147 + 2400/280 = 2547/280
  5. So, 21/40 + 60/7 = 2547/280
    In mixed form: 927/280

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