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Add 45/56 and 72/80

45/56 + 72/80 is 477/280.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 56 × 10 = 560,
    45/56 = 45 × 10/56 × 10 = 450/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    72/80 = 72 × 7/80 × 7 = 504/560
  4. Add the two like fractions:
    450/560 + 504/560 = 450 + 504/560 = 954/560
  5. 954/560 simplified gives 477/280
  6. So, 45/56 + 72/80 = 477/280
    In mixed form: 1197/280

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