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Add 20/15 and 9/7

1st number: 1 5/15, 2nd number: 1 2/7

20/15 + 9/7 is 55/21.

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,
    20/15 = 20 × 7/15 × 7 = 140/105
  3. Likewise, for the 2nd fraction, since 7 × 15 = 105,
    9/7 = 9 × 15/7 × 15 = 135/105
  4. Add the two like fractions:
    140/105 + 135/105 = 140 + 135/105 = 275/105
  5. 275/105 simplified gives 55/21
  6. So, 20/15 + 9/7 = 55/21
    In mixed form: 213/21

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