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Add 90/70 and 5/20

1st number: 1 20/70, 2nd number: 5/20

90/70 + 5/20 is 43/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 20 is 140
  2. For the 1st fraction, since 70 × 2 = 140,
    90/70 = 90 × 2/70 × 2 = 180/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    5/20 = 5 × 7/20 × 7 = 35/140
  4. Add the two fractions:
    180/140 + 35/140 = 180 + 35/140 = 215/140
  5. After reducing the fraction, the answer is 43/28
  6. In mixed form: 115/28

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