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Add 1/21 and 72/30

1st number: 1/21, 2nd number: 2 12/30

1/21 + 72/30 is 257/105.

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,
    72/30 = 72 × 7/30 × 7 = 504/210
  4. Add the two like fractions:
    10/210 + 504/210 = 10 + 504/210 = 514/210
  5. 514/210 simplified gives 257/105
  6. So, 1/21 + 72/30 = 257/105
    In mixed form: 247/105

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