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Add 21/12 and 4/70

1st number: 1 9/12, 2nd number: 4/70

21/12 + 4/70 is 253/140.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 70 is 420

    Next, find the equivalent fraction of both fractional numbers with denominator 420
  2. For the 1st fraction, since 12 × 35 = 420,
    21/12 = 21 × 35/12 × 35 = 735/420
  3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
    4/70 = 4 × 6/70 × 6 = 24/420
  4. Add the two like fractions:
    735/420 + 24/420 = 735 + 24/420 = 759/420
  5. 759/420 simplified gives 253/140
  6. So, 21/12 + 4/70 = 253/140
    In mixed form: 1113/140

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