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Add 10/21 and 80/45

1st number: 10/21, 2nd number: 1 35/45

10/21 + 80/45 is 142/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 45 is 315
  2. For the 1st fraction, since 21 × 15 = 315,
    10/21 = 10 × 15/21 × 15 = 150/315
  3. Likewise, for the 2nd fraction, since 45 × 7 = 315,
    80/45 = 80 × 7/45 × 7 = 560/315
  4. Add the two fractions:
    150/315 + 560/315 = 150 + 560/315 = 710/315
  5. After reducing the fraction, the answer is 142/63
  6. In mixed form: 216/63

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