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Add 21/84 and 63/10

1st number: 21/84, 2nd number: 6 3/10

21/84 + 63/10 is 131/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 10 is 420
  2. For the 1st fraction, since 84 × 5 = 420,
    21/84 = 21 × 5/84 × 5 = 105/420
  3. Likewise, for the 2nd fraction, since 10 × 42 = 420,
    63/10 = 63 × 42/10 × 42 = 2646/420
  4. Add the two fractions:
    105/420 + 2646/420 = 105 + 2646/420 = 2751/420
  5. After reducing the fraction, the answer is 131/20
  6. In mixed form: 611/20

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