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Add 70/72 and 9/28

70/72 + 9/28 is 163/126.

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,
    70/72 = 70 × 7/72 × 7 = 490/504
  3. Likewise, for the 2nd fraction, since 28 × 18 = 504,
    9/28 = 9 × 18/28 × 18 = 162/504
  4. Add the two like fractions:
    490/504 + 162/504 = 490 + 162/504 = 652/504
  5. 652/504 simplified gives 163/126
  6. So, 70/72 + 9/28 = 163/126
    In mixed form: 137/126

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