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Add 70/21 and 8/90

1st number: 3 7/21, 2nd number: 8/90

70/21 + 8/90 is 154/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 90 is 630
  2. For the 1st fraction, since 21 × 30 = 630,
    70/21 = 70 × 30/21 × 30 = 2100/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    8/90 = 8 × 7/90 × 7 = 56/630
  4. Add the two fractions:
    2100/630 + 56/630 = 2100 + 56/630 = 2156/630
  5. 2156/630 simplified gives 154/45
  6. So, 70/21 + 8/90 = 154/45
    In mixed form: 319/45

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