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Add 21/7 and 32/20

1st number: 3 0/7, 2nd number: 1 12/20

21/7 + 32/20 is 23/5.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    21/7 = 21 × 20/7 × 20 = 420/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    32/20 = 32 × 7/20 × 7 = 224/140
  4. Add the two like fractions:
    420/140 + 224/140 = 420 + 224/140 = 644/140
  5. 644/140 simplified gives 23/5
  6. So, 21/7 + 32/20 = 23/5
    In mixed form: 43/5

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