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Add 70/63 and 21/20

1st number: 1 7/63, 2nd number: 1 1/20

70/63 + 21/20 is 389/180.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 20 is 1260
  2. For the 1st fraction, since 63 × 20 = 1260,
    70/63 = 70 × 20/63 × 20 = 1400/1260
  3. Likewise, for the 2nd fraction, since 20 × 63 = 1260,
    21/20 = 21 × 63/20 × 63 = 1323/1260
  4. Add the two fractions:
    1400/1260 + 1323/1260 = 1400 + 1323/1260 = 2723/1260
  5. 2723/1260 simplified gives 389/180
  6. So, 70/63 + 21/20 = 389/180
    In mixed form: 229/180

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