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Add 21/70 and 18/25

21/70 + 18/25 is 51/50.

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,
    18/25 = 18 × 14/25 × 14 = 252/350
  4. Add the two fractions:
    105/350 + 252/350 = 105 + 252/350 = 357/350
  5. 357/350 simplified gives 51/50
  6. So, 21/70 + 18/25 = 51/50
    In mixed form: 11/50

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