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Add 25/36 and 42/80

25/36 + 42/80 is 439/360.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 80 is 720
  2. For the 1st fraction, since 36 × 20 = 720,
    25/36 = 25 × 20/36 × 20 = 500/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    42/80 = 42 × 9/80 × 9 = 378/720
  4. Add the two fractions:
    500/720 + 378/720 = 500 + 378/720 = 878/720
  5. After reducing the fraction, the answer is 439/360
  6. In mixed form: 179/360

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