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Add 90/20 and 7/72

1st number: 4 10/20, 2nd number: 7/72

90/20 + 7/72 is 331/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 72 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 20 × 18 = 360,
    90/20 = 90 × 18/20 × 18 = 1620/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    7/72 = 7 × 5/72 × 5 = 35/360
  4. Add the two like fractions:
    1620/360 + 35/360 = 1620 + 35/360 = 1655/360
  5. 1655/360 simplified gives 331/72
  6. So, 90/20 + 7/72 = 331/72
    In mixed form: 443/72

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