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Add 63/70 and 4/80

63/70 + 4/80 is 19/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 80 is 560
  2. For the 1st fraction, since 70 × 8 = 560,
    63/70 = 63 × 8/70 × 8 = 504/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    4/80 = 4 × 7/80 × 7 = 28/560
  4. Add the two fractions:
    504/560 + 28/560 = 504 + 28/560 = 532/560
  5. 532/560 simplified gives 19/20
  6. So, 63/70 + 4/80 = 19/20

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