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Add 21/10 and 18/63

1st number: 2 1/10, 2nd number: 18/63

21/10 + 18/63 is 167/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 63 is 630
  2. For the 1st fraction, since 10 × 63 = 630,
    21/10 = 21 × 63/10 × 63 = 1323/630
  3. Likewise, for the 2nd fraction, since 63 × 10 = 630,
    18/63 = 18 × 10/63 × 10 = 180/630
  4. Add the two fractions:
    1323/630 + 180/630 = 1323 + 180/630 = 1503/630
  5. After reducing the fraction, the answer is 167/70
  6. In mixed form: 227/70

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