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Add 30/18 and 42/80

1st number: 1 12/18, 2nd number: 42/80

30/18 + 42/80 is 263/120.

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,
    30/18 = 30 × 40/18 × 40 = 1200/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    42/80 = 42 × 9/80 × 9 = 378/720
  4. Add the two like fractions:
    1200/720 + 378/720 = 1200 + 378/720 = 1578/720
  5. 1578/720 simplified gives 263/120
  6. So, 30/18 + 42/80 = 263/120
    In mixed form: 223/120

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