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Add 70/72 and 24/42

70/72 + 24/42 is 389/252.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 42 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 42 × 12 = 504,
    24/42 = 24 × 12/42 × 12 = 288/504
  4. Add the two like fractions:
    490/504 + 288/504 = 490 + 288/504 = 778/504
  5. 778/504 simplified gives 389/252
  6. So, 70/72 + 24/42 = 389/252
    In mixed form: 1137/252

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