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Add 21/20 and 5/7

1st number: 1 1/20, 2nd number: 5/7

21/20 + 5/7 is 247/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 20 × 7 = 140,
    21/20 = 21 × 7/20 × 7 = 147/140
  3. Likewise, for the 2nd fraction, since 7 × 20 = 140,
    5/7 = 5 × 20/7 × 20 = 100/140
  4. Add the two like fractions:
    147/140 + 100/140 = 147 + 100/140 = 247/140
  5. So, 21/20 + 5/7 = 247/140
    In mixed form: 1107/140

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