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Add 28/30 and 14/70

28/30 + 14/70 is 17/15.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 70 is 210
  2. For the 1st fraction, since 30 × 7 = 210,
    28/30 = 28 × 7/30 × 7 = 196/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    14/70 = 14 × 3/70 × 3 = 42/210
  4. Add the two fractions:
    196/210 + 42/210 = 196 + 42/210 = 238/210
  5. 238/210 simplified gives 17/15
  6. So, 28/30 + 14/70 = 17/15
    In mixed form: 12/15

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