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Add 90/7 and 84/20

1st number: 12 6/7, 2nd number: 4 4/20

90/7 + 84/20 is 597/35.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 7 × 20 = 140,
    90/7 = 90 × 20/7 × 20 = 1800/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    84/20 = 84 × 7/20 × 7 = 588/140
  4. Add the two like fractions:
    1800/140 + 588/140 = 1800 + 588/140 = 2388/140
  5. 2388/140 simplified gives 597/35
  6. So, 90/7 + 84/20 = 597/35
    In mixed form: 172/35

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