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Add 70/20 and 15/9

1st number: 3 10/20, 2nd number: 1 6/9

70/20 + 15/9 is 31/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 9 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 20 × 9 = 180,
    70/20 = 70 × 9/20 × 9 = 630/180
  3. Likewise, for the 2nd fraction, since 9 × 20 = 180,
    15/9 = 15 × 20/9 × 20 = 300/180
  4. Add the two like fractions:
    630/180 + 300/180 = 630 + 300/180 = 930/180
  5. 930/180 simplified gives 31/6
  6. So, 70/20 + 15/9 = 31/6
    In mixed form: 51/6

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