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Add 10/21 and 8/10

10/21 + 8/10 is 134/105.

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,
    10/21 = 10 × 10/21 × 10 = 100/210
  3. Likewise, for the 2nd fraction, since 10 × 21 = 210,
    8/10 = 8 × 21/10 × 21 = 168/210
  4. Add the two fractions:
    100/210 + 168/210 = 100 + 168/210 = 268/210
  5. After reducing the fraction, the answer is 134/105
  6. In mixed form: 129/105

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