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Add 70/20 and 63/28

1st number: 3 10/20, 2nd number: 2 7/28

70/20 + 63/28 is 23/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 28 is 140
  2. For the 1st fraction, since 20 × 7 = 140,
    70/20 = 70 × 7/20 × 7 = 490/140
  3. Likewise, for the 2nd fraction, since 28 × 5 = 140,
    63/28 = 63 × 5/28 × 5 = 315/140
  4. Add the two fractions:
    490/140 + 315/140 = 490 + 315/140 = 805/140
  5. After reducing the fraction, the answer is 23/4
  6. In mixed form: 53/4

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