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Add 70/72 and 5/20

70/72 + 5/20 is 11/9.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 20 is 360
  2. For the 1st fraction, since 72 × 5 = 360,
    70/72 = 70 × 5/72 × 5 = 350/360
  3. Likewise, for the 2nd fraction, since 20 × 18 = 360,
    5/20 = 5 × 18/20 × 18 = 90/360
  4. Add the two fractions:
    350/360 + 90/360 = 350 + 90/360 = 440/360
  5. 440/360 simplified gives 11/9
  6. So, 70/72 + 5/20 = 11/9
    In mixed form: 12/9

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