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Add 10/90 and 40/21

1st number: 10/90, 2nd number: 1 19/21

10/90 + 40/21 is 127/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 21 is 630
  2. For the 1st fraction, since 90 × 7 = 630,
    10/90 = 10 × 7/90 × 7 = 70/630
  3. Likewise, for the 2nd fraction, since 21 × 30 = 630,
    40/21 = 40 × 30/21 × 30 = 1200/630
  4. Add the two fractions:
    70/630 + 1200/630 = 70 + 1200/630 = 1270/630
  5. After reducing the fraction, the answer is 127/63
  6. In mixed form: 21/63

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