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Add 54/21 and 10/40

1st number: 2 12/21, 2nd number: 10/40

54/21 + 10/40 is 79/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 40 is 840
  2. For the 1st fraction, since 21 × 40 = 840,
    54/21 = 54 × 40/21 × 40 = 2160/840
  3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
    10/40 = 10 × 21/40 × 21 = 210/840
  4. Add the two fractions:
    2160/840 + 210/840 = 2160 + 210/840 = 2370/840
  5. After reducing the fraction, the answer is 79/28
  6. In mixed form: 223/28

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