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Add 45/70 and 15/21

45/70 + 15/21 is 19/14.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 21 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 70 × 3 = 210,
    45/70 = 45 × 3/70 × 3 = 135/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    15/21 = 15 × 10/21 × 10 = 150/210
  4. Add the two like fractions:
    135/210 + 150/210 = 135 + 150/210 = 285/210
  5. 285/210 simplified gives 19/14
  6. So, 45/70 + 15/21 = 19/14
    In mixed form: 15/14

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