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Add 90/70 and 70/84

1st number: 1 20/70, 2nd number: 70/84

90/70 + 70/84 is 89/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 84 is 420
  2. For the 1st fraction, since 70 × 6 = 420,
    90/70 = 90 × 6/70 × 6 = 540/420
  3. Likewise, for the 2nd fraction, since 84 × 5 = 420,
    70/84 = 70 × 5/84 × 5 = 350/420
  4. Add the two fractions:
    540/420 + 350/420 = 540 + 350/420 = 890/420
  5. After reducing the fraction, the answer is 89/42
  6. In mixed form: 25/42

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