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Add 8/36 and 21/70

8/36 + 21/70 is 47/90.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 70 is 1260

    Next, find the equivalent fraction of both fractional numbers with denominator 1260
  2. For the 1st fraction, since 36 × 35 = 1260,
    8/36 = 8 × 35/36 × 35 = 280/1260
  3. Likewise, for the 2nd fraction, since 70 × 18 = 1260,
    21/70 = 21 × 18/70 × 18 = 378/1260
  4. Add the two like fractions:
    280/1260 + 378/1260 = 280 + 378/1260 = 658/1260
  5. 658/1260 simplified gives 47/90
  6. So, 8/36 + 21/70 = 47/90

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