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Add 3/90 and 70/21

1st number: 3/90, 2nd number: 3 7/21

3/90 + 70/21 is 101/30.

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,
    3/90 = 3 × 7/90 × 7 = 21/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    70/21 = 70 × 30/21 × 30 = 2100/630
  4. Add the two like fractions:
    21/630 + 2100/630 = 21 + 2100/630 = 2121/630
  5. 2121/630 simplified gives 101/30
  6. So, 3/90 + 70/21 = 101/30
    In mixed form: 311/30

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