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Add 21/70 and 15/48

21/70 + 15/48 is 49/80.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 48 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 70 × 24 = 1680,
    21/70 = 21 × 24/70 × 24 = 504/1680
  3. Likewise, for the 2nd fraction, since 48 × 35 = 1680,
    15/48 = 15 × 35/48 × 35 = 525/1680
  4. Add the two like fractions:
    504/1680 + 525/1680 = 504 + 525/1680 = 1029/1680
  5. 1029/1680 simplified gives 49/80
  6. So, 21/70 + 15/48 = 49/80

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