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Add 42/15 and 21/16

1st number: 2 12/15, 2nd number: 1 5/16

42/15 + 21/16 is 329/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 16 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 15 × 16 = 240,
    42/15 = 42 × 16/15 × 16 = 672/240
  3. Likewise, for the 2nd fraction, since 16 × 15 = 240,
    21/16 = 21 × 15/16 × 15 = 315/240
  4. Add the two like fractions:
    672/240 + 315/240 = 672 + 315/240 = 987/240
  5. 987/240 simplified gives 329/80
  6. So, 42/15 + 21/16 = 329/80
    In mixed form: 49/80

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