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Add 42/18 and 40/28

1st number: 2 6/18, 2nd number: 1 12/28

42/18 + 40/28 is 79/21.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 18 and 28 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 18 × 14 = 252,
    42/18 = 42 × 14/18 × 14 = 588/252
  3. Likewise, for the 2nd fraction, since 28 × 9 = 252,
    40/28 = 40 × 9/28 × 9 = 360/252
  4. Add the two like fractions:
    588/252 + 360/252 = 588 + 360/252 = 948/252
  5. 948/252 simplified gives 79/21
  6. So, 42/18 + 40/28 = 79/21
    In mixed form: 316/21

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