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Add 21/18 and 7/10

1st number: 1 3/18, 2nd number: 7/10

21/18 + 7/10 is 28/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 10 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 18 × 5 = 90,
    21/18 = 21 × 5/18 × 5 = 105/90
  3. Likewise, for the 2nd fraction, since 10 × 9 = 90,
    7/10 = 7 × 9/10 × 9 = 63/90
  4. Add the two like fractions:
    105/90 + 63/90 = 105 + 63/90 = 168/90
  5. 168/90 simplified gives 28/15
  6. So, 21/18 + 7/10 = 28/15
    In mixed form: 113/15

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