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Add 21/70 and 20/56

21/70 + 20/56 is 23/35.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 56 is 280

    Next, find the equivalent fraction of both fractional numbers with denominator 280
  2. For the 1st fraction, since 70 × 4 = 280,
    21/70 = 21 × 4/70 × 4 = 84/280
  3. Likewise, for the 2nd fraction, since 56 × 5 = 280,
    20/56 = 20 × 5/56 × 5 = 100/280
  4. Add the two like fractions:
    84/280 + 100/280 = 84 + 100/280 = 184/280
  5. 184/280 simplified gives 23/35
  6. So, 21/70 + 20/56 = 23/35

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