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Add 20/35 and 72/80

20/35 + 72/80 is 103/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 35 × 16 = 560,
    20/35 = 20 × 16/35 × 16 = 320/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    72/80 = 72 × 7/80 × 7 = 504/560
  4. Add the two like fractions:
    320/560 + 504/560 = 320 + 504/560 = 824/560
  5. 824/560 simplified gives 103/70
  6. So, 20/35 + 72/80 = 103/70
    In mixed form: 133/70

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