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Add 21/2 and 20/15

1st number: 10 1/2, 2nd number: 1 5/15

21/2 + 20/15 is 71/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 15 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 2 × 15 = 30,
    21/2 = 21 × 15/2 × 15 = 315/30
  3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
    20/15 = 20 × 2/15 × 2 = 40/30
  4. Add the two like fractions:
    315/30 + 40/30 = 315 + 40/30 = 355/30
  5. 355/30 simplified gives 71/6
  6. So, 21/2 + 20/15 = 71/6
    In mixed form: 115/6

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