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Add 30/70 and 45/72

30/70 + 45/72 is 59/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 72 is 2520

    Next, find the equivalent fraction of both fractional numbers with denominator 2520
  2. For the 1st fraction, since 70 × 36 = 2520,
    30/70 = 30 × 36/70 × 36 = 1080/2520
  3. Likewise, for the 2nd fraction, since 72 × 35 = 2520,
    45/72 = 45 × 35/72 × 35 = 1575/2520
  4. Add the two like fractions:
    1080/2520 + 1575/2520 = 1080 + 1575/2520 = 2655/2520
  5. 2655/2520 simplified gives 59/56
  6. So, 30/70 + 45/72 = 59/56
    In mixed form: 13/56

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