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Add 72/80 and 3/28

72/80 + 3/28 is 141/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 28 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 80 × 7 = 560,
    72/80 = 72 × 7/80 × 7 = 504/560
  3. Likewise, for the 2nd fraction, since 28 × 20 = 560,
    3/28 = 3 × 20/28 × 20 = 60/560
  4. Add the two like fractions:
    504/560 + 60/560 = 504 + 60/560 = 564/560
  5. 564/560 simplified gives 141/140
  6. So, 72/80 + 3/28 = 141/140
    In mixed form: 11/140

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