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Add 1/21 and 45/30

1st number: 1/21, 2nd number: 1 15/30

1/21 + 45/30 is 65/42.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 21 × 10 = 210,
    1/21 = 1 × 10/21 × 10 = 10/210
  3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
    45/30 = 45 × 7/30 × 7 = 315/210
  4. Add the two like fractions:
    10/210 + 315/210 = 10 + 315/210 = 325/210
  5. 325/210 simplified gives 65/42
  6. So, 1/21 + 45/30 = 65/42
    In mixed form: 123/42

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