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Add 70/18 and 90/80

1st number: 3 16/18, 2nd number: 1 10/80

70/18 + 90/80 is 361/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 18 × 40 = 720,
    70/18 = 70 × 40/18 × 40 = 2800/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    90/80 = 90 × 9/80 × 9 = 810/720
  4. Add the two like fractions:
    2800/720 + 810/720 = 2800 + 810/720 = 3610/720
  5. 3610/720 simplified gives 361/72
  6. So, 70/18 + 90/80 = 361/72
    In mixed form: 51/72

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