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Add 2/15 and 21/70

2/15 + 21/70 is 13/30.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 70 is 210
  2. For the 1st fraction, since 15 × 14 = 210,
    2/15 = 2 × 14/15 × 14 = 28/210
  3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
    21/70 = 21 × 3/70 × 3 = 63/210
  4. Add the two fractions:
    28/210 + 63/210 = 28 + 63/210 = 91/210
  5. 91/210 simplified gives 13/30
  6. So, 2/15 + 21/70 = 13/30

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