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Add 90/60 and 70/21

1st number: 1 30/60, 2nd number: 3 7/21

90/60 + 70/21 is 29/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 60 and 21 is 420
  2. For the 1st fraction, since 60 × 7 = 420,
    90/60 = 90 × 7/60 × 7 = 630/420
  3. Likewise, for the 2nd fraction, since 21 × 20 = 420,
    70/21 = 70 × 20/21 × 20 = 1400/420
  4. Add the two fractions:
    630/420 + 1400/420 = 630 + 1400/420 = 2030/420
  5. 2030/420 simplified gives 29/6
  6. So, 90/60 + 70/21 = 29/6
    In mixed form: 45/6

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