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Add 42/15 and 1/28

1st number: 2 12/15, 2nd number: 1/28

42/15 + 1/28 is 397/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 28 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 15 × 28 = 420,
    42/15 = 42 × 28/15 × 28 = 1176/420
  3. Likewise, for the 2nd fraction, since 28 × 15 = 420,
    1/28 = 1 × 15/28 × 15 = 15/420
  4. Add the two like fractions:
    1176/420 + 15/420 = 1176 + 15/420 = 1191/420
  5. 1191/420 simplified gives 397/140
  6. So, 42/15 + 1/28 = 397/140
    In mixed form: 2117/140

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