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Add 40/72 and 21/30

40/72 + 21/30 is 113/90.

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,
    40/72 = 40 × 5/72 × 5 = 200/360
  3. Likewise, for the 2nd fraction, since 30 × 12 = 360,
    21/30 = 21 × 12/30 × 12 = 252/360
  4. Add the two like fractions:
    200/360 + 252/360 = 200 + 252/360 = 452/360
  5. 452/360 simplified gives 113/90
  6. So, 40/72 + 21/30 = 113/90
    In mixed form: 123/90

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