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Add 27/30 and 70/21

1st number: 27/30, 2nd number: 3 7/21

27/30 + 70/21 is 127/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 21 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 30 × 7 = 210,
    27/30 = 27 × 7/30 × 7 = 189/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    70/21 = 70 × 10/21 × 10 = 700/210
  4. Add the two like fractions:
    189/210 + 700/210 = 189 + 700/210 = 889/210
  5. 889/210 simplified gives 127/30
  6. So, 27/30 + 70/21 = 127/30
    In mixed form: 47/30

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