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Add 5/21 and 5/10

5/21 + 5/10 is 31/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 10 is 210
  2. For the 1st fraction, since 21 × 10 = 210,
    5/21 = 5 × 10/21 × 10 = 50/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    5/10 = 5 × 21/10 × 21 = 105/210
  4. Add the two fractions:
    50/210 + 105/210 = 50 + 105/210 = 155/210
  5. After reducing the fraction, the answer is 31/42

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