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Add 18/72 and 21/5

1st number: 18/72, 2nd number: 4 1/5

18/72 + 21/5 is 89/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 5 is 360

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 72 × 5 = 360,
    18/72 = 18 × 5/72 × 5 = 90/360
  3. Likewise, for the 2nd fraction, since 5 × 72 = 360,
    21/5 = 21 × 72/5 × 72 = 1512/360
  4. Add the two like fractions:
    90/360 + 1512/360 = 90 + 1512/360 = 1602/360
  5. 1602/360 simplified gives 89/20
  6. So, 18/72 + 21/5 = 89/20
    In mixed form: 49/20

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