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Add 30/15 and 21/7

1st number: 2 0/15, 2nd number: 3 0/7

30/15 + 21/7 is 5/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 7 is 105

    Next, find the equivalent fraction of both fractional numbers with denominator 105
  2. For the 1st fraction, since 15 × 7 = 105,
    30/15 = 30 × 7/15 × 7 = 210/105
  3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
    21/7 = 21 × 15/7 × 15 = 315/105
  4. Add the two like fractions:
    210/105 + 315/105 = 210 + 315/105 = 525/105
  5. 525/105 simplified gives 5/1
  6. So, 30/15 + 21/7 = 5/1

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