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Add 45/56 and 20/42

45/56 + 20/42 is 215/168.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 56 and 42 is 168
  2. For the 1st fraction, since 56 × 3 = 168,
    45/56 = 45 × 3/56 × 3 = 135/168
  3. Likewise, for the 2nd fraction, since 42 × 4 = 168,
    20/42 = 20 × 4/42 × 4 = 80/168
  4. Add the two fractions:
    135/168 + 80/168 = 135 + 80/168 = 215/168
  5. So, 45/56 + 20/42 = 215/168
    In mixed form: 147/168

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