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Add 54/70 and 20/80

54/70 + 20/80 is 143/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 70 × 8 = 560,
    54/70 = 54 × 8/70 × 8 = 432/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    20/80 = 20 × 7/80 × 7 = 140/560
  4. Add the two like fractions:
    432/560 + 140/560 = 432 + 140/560 = 572/560
  5. 572/560 simplified gives 143/140
  6. So, 54/70 + 20/80 = 143/140
    In mixed form: 13/140

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