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Add 70/20 and 20/7

1st number: 3 10/20, 2nd number: 2 6/7

70/20 + 20/7 is 89/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 7 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 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 7 × 20 = 140,
    20/7 = 20 × 20/7 × 20 = 400/140
  4. Add the two like fractions:
    490/140 + 400/140 = 490 + 400/140 = 890/140
  5. 890/140 simplified gives 89/14
  6. So, 70/20 + 20/7 = 89/14
    In mixed form: 65/14

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