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Add 20/45 and 35/72

20/45 + 35/72 is 67/72.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 72 is 360
  2. For the 1st fraction, since 45 × 8 = 360,
    20/45 = 20 × 8/45 × 8 = 160/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    35/72 = 35 × 5/72 × 5 = 175/360
  4. Add the two fractions:
    160/360 + 175/360 = 160 + 175/360 = 335/360
  5. 335/360 simplified gives 67/72
  6. So, 20/45 + 35/72 = 67/72

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