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Add 15/70 and 28/20

1st number: 15/70, 2nd number: 1 8/20

15/70 + 28/20 is 113/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 70 × 2 = 140,
    15/70 = 15 × 2/70 × 2 = 30/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    28/20 = 28 × 7/20 × 7 = 196/140
  4. Add the two like fractions:
    30/140 + 196/140 = 30 + 196/140 = 226/140
  5. 226/140 simplified gives 113/70
  6. So, 15/70 + 28/20 = 113/70
    In mixed form: 143/70

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