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Add 70/21 and 7/20

1st number: 3 7/21, 2nd number: 7/20

70/21 + 7/20 is 221/60.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 20 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 21 × 20 = 420,
    70/21 = 70 × 20/21 × 20 = 1400/420
  3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
    7/20 = 7 × 21/20 × 21 = 147/420
  4. Add the two like fractions:
    1400/420 + 147/420 = 1400 + 147/420 = 1547/420
  5. 1547/420 simplified gives 221/60
  6. So, 70/21 + 7/20 = 221/60
    In mixed form: 341/60

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