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Add 7/15 and 42/80

7/15 + 42/80 is 119/120.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    7/15 = 7 × 16/15 × 16 = 112/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    42/80 = 42 × 3/80 × 3 = 126/240
  4. Add the two like fractions:
    112/240 + 126/240 = 112 + 126/240 = 238/240
  5. 238/240 simplified gives 119/120
  6. So, 7/15 + 42/80 = 119/120

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