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Add 42/7 and 20/80

1st number: 6 0/7, 2nd number: 20/80

42/7 + 20/80 is 25/4.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 80 is 560

    Next, find the equivalent fraction of both fractional numbers with denominator 560
  2. For the 1st fraction, since 7 × 80 = 560,
    42/7 = 42 × 80/7 × 80 = 3360/560
  3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
    20/80 = 20 × 7/80 × 7 = 140/560
  4. Add the two like fractions:
    3360/560 + 140/560 = 3360 + 140/560 = 3500/560
  5. 3500/560 simplified gives 25/4
  6. So, 42/7 + 20/80 = 25/4
    In mixed form: 61/4

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