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Add 45/20 and 70/45

1st number: 2 5/20, 2nd number: 1 25/45

45/20 + 70/45 is 137/36.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 45 is 180
  2. For the 1st fraction, since 20 × 9 = 180,
    45/20 = 45 × 9/20 × 9 = 405/180
  3. Likewise, for the 2nd fraction, since 45 × 4 = 180,
    70/45 = 70 × 4/45 × 4 = 280/180
  4. Add the two fractions:
    405/180 + 280/180 = 405 + 280/180 = 685/180
  5. 685/180 simplified gives 137/36
  6. So, 45/20 + 70/45 = 137/36
    In mixed form: 329/36

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