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Add 35/90 and 80/21

1st number: 35/90, 2nd number: 3 17/21

35/90 + 80/21 is 529/126.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 21 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    35/90 = 35 × 7/90 × 7 = 245/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    80/21 = 80 × 30/21 × 30 = 2400/630
  4. Add the two like fractions:
    245/630 + 2400/630 = 245 + 2400/630 = 2645/630
  5. 2645/630 simplified gives 529/126
  6. So, 35/90 + 80/21 = 529/126
    In mixed form: 425/126

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