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Add 30/45 and 42/80

30/45 + 42/80 is 143/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 45 × 16 = 720,
    30/45 = 30 × 16/45 × 16 = 480/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    42/80 = 42 × 9/80 × 9 = 378/720
  4. Add the two like fractions:
    480/720 + 378/720 = 480 + 378/720 = 858/720
  5. 858/720 simplified gives 143/120
  6. So, 30/45 + 42/80 = 143/120
    In mixed form: 123/120

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