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Add 20/90 and 84/72

1st number: 20/90, 2nd number: 1 12/72

20/90 + 84/72 is 25/18.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 72 is 360
  2. For the 1st fraction, since 90 × 4 = 360,
    20/90 = 20 × 4/90 × 4 = 80/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    84/72 = 84 × 5/72 × 5 = 420/360
  4. Add the two fractions:
    80/360 + 420/360 = 80 + 420/360 = 500/360
  5. 500/360 simplified gives 25/18
  6. So, 20/90 + 84/72 = 25/18
    In mixed form: 17/18

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