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Add 9/70 and 28/80

9/70 + 28/80 is 67/140.

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,
    9/70 = 9 × 8/70 × 8 = 72/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    28/80 = 28 × 7/80 × 7 = 196/560
  4. Add the two like fractions:
    72/560 + 196/560 = 72 + 196/560 = 268/560
  5. 268/560 simplified gives 67/140
  6. So, 9/70 + 28/80 = 67/140

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