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Add 21/50 and 3/70

21/50 + 3/70 is 81/175.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 50 and 70 is 350
  2. For the 1st fraction, since 50 × 7 = 350,
    21/50 = 21 × 7/50 × 7 = 147/350
  3. Likewise, for the 2nd fraction, since 70 × 5 = 350,
    3/70 = 3 × 5/70 × 5 = 15/350
  4. Add the two fractions:
    147/350 + 15/350 = 147 + 15/350 = 162/350
  5. After reducing the fraction, the answer is 81/175

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