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Add 18/45 and 6/20

18/45 + 6/20 is 7/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180
  2. For the 1st fraction, since 45 × 4 = 180,
    18/45 = 18 × 4/45 × 4 = 72/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    6/20 = 6 × 9/20 × 9 = 54/180
  4. Add the two fractions:
    72/180 + 54/180 = 72 + 54/180 = 126/180
  5. 126/180 simplified gives 7/10
  6. So, 18/45 + 6/20 = 7/10

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