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Add 15/70 and 72/80

15/70 + 72/80 is 39/35.

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,
    15/70 = 15 × 8/70 × 8 = 120/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    72/80 = 72 × 7/80 × 7 = 504/560
  4. Add the two like fractions:
    120/560 + 504/560 = 120 + 504/560 = 624/560
  5. 624/560 simplified gives 39/35
  6. So, 15/70 + 72/80 = 39/35
    In mixed form: 14/35

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