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Add 21/70 and 24/60

21/70 + 24/60 is 7/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 60 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 70 × 6 = 420,
    21/70 = 21 × 6/70 × 6 = 126/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    24/60 = 24 × 7/60 × 7 = 168/420
  4. Add the two like fractions:
    126/420 + 168/420 = 126 + 168/420 = 294/420
  5. 294/420 simplified gives 7/10
  6. So, 21/70 + 24/60 = 7/10

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