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Add 21/5 and 10/72

1st number: 4 1/5, 2nd number: 10/72

21/5 + 10/72 is 781/180.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 360
  2. For the 1st fraction, since 5 × 72 = 360,
    21/5 = 21 × 72/5 × 72 = 1512/360
  3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
    10/72 = 10 × 5/72 × 5 = 50/360
  4. Add the two like fractions:
    1512/360 + 50/360 = 1512 + 50/360 = 1562/360
  5. 1562/360 simplified gives 781/180
  6. So, 21/5 + 10/72 = 781/180
    In mixed form: 461/180

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