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Add 3/28 and 90/70

1st number: 3/28, 2nd number: 1 20/70

3/28 + 90/70 is 39/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 70 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    3/28 = 3 × 5/28 × 5 = 15/140
  3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
    90/70 = 90 × 2/70 × 2 = 180/140
  4. Add the two like fractions:
    15/140 + 180/140 = 15 + 180/140 = 195/140
  5. 195/140 simplified gives 39/28
  6. So, 3/28 + 90/70 = 39/28
    In mixed form: 111/28

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