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Add 21/70 and 90/25

1st number: 21/70, 2nd number: 3 15/25

21/70 + 90/25 is 39/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 25 is 350
  2. For the 1st fraction, since 70 × 5 = 350,
    21/70 = 21 × 5/70 × 5 = 105/350
  3. Likewise, for the 2nd fraction, since 25 × 14 = 350,
    90/25 = 90 × 14/25 × 14 = 1260/350
  4. Add the two fractions:
    105/350 + 1260/350 = 105 + 1260/350 = 1365/350
  5. 1365/350 simplified gives 39/10
  6. So, 21/70 + 90/25 = 39/10
    In mixed form: 39/10

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