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Add 20/72 and 21/30

20/72 + 21/30 is 44/45.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 30 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    20/72 = 20 × 5/72 × 5 = 100/360
  3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
    21/30 = 21 × 12/30 × 12 = 252/360
  4. Add the two like fractions:
    100/360 + 252/360 = 100 + 252/360 = 352/360
  5. 352/360 simplified gives 44/45
  6. So, 20/72 + 21/30 = 44/45

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