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Add 1/70 and 21/60

1/70 + 21/60 is 51/140.

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,
    1/70 = 1 × 6/70 × 6 = 6/420
  3. Likewise, for the 2nd fraction, since 60 × 7 = 420,
    21/60 = 21 × 7/60 × 7 = 147/420
  4. Add the two like fractions:
    6/420 + 147/420 = 6 + 147/420 = 153/420
  5. 153/420 simplified gives 51/140
  6. So, 1/70 + 21/60 = 51/140

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