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Add 25/21 and 18/7

1st number: 1 4/21, 2nd number: 2 4/7

25/21 + 18/7 is 79/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 7 is 21
  2. For the 1st fraction, since 21 × 1 = 21,
    25/21 = 25 × 1/21 × 1 = 25/21
  3. Likewise, for the 2nd fraction, since 7 × 3 = 21,
    18/7 = 18 × 3/7 × 3 = 54/21
  4. Add the two fractions:
    25/21 + 54/21 = 25 + 54/21 = 79/21
  5. In mixed form: 316/21

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