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Add 40/72 and 20/28

40/72 + 20/28 is 80/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 28 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 72 × 7 = 504,
    40/72 = 40 × 7/72 × 7 = 280/504
  3. Likewise, for the 2nd fraction, since 28 × 18 = 504,
    20/28 = 20 × 18/28 × 18 = 360/504
  4. Add the two like fractions:
    280/504 + 360/504 = 280 + 360/504 = 640/504
  5. 640/504 simplified gives 80/63
  6. So, 40/72 + 20/28 = 80/63
    In mixed form: 117/63

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