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Add 45/70 and 5/20

45/70 + 5/20 is 25/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 20 is 140
  2. For the 1st fraction, since 70 × 2 = 140,
    45/70 = 45 × 2/70 × 2 = 90/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    5/20 = 5 × 7/20 × 7 = 35/140
  4. Add the two fractions:
    90/140 + 35/140 = 90 + 35/140 = 125/140
  5. 125/140 simplified gives 25/28
  6. So, 45/70 + 5/20 = 25/28

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