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Add 70/90 and 72/84

70/90 + 72/84 is 103/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 84 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 90 × 14 = 1260,
    70/90 = 70 × 14/90 × 14 = 980/1260
  3. Likewise, for the 2nd fraction, since 84 × 15 = 1260,
    72/84 = 72 × 15/84 × 15 = 1080/1260
  4. Add the two like fractions:
    980/1260 + 1080/1260 = 980 + 1080/1260 = 2060/1260
  5. 2060/1260 simplified gives 103/63
  6. So, 70/90 + 72/84 = 103/63
    In mixed form: 140/63

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