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Add 1/10 and 15/21

1/10 + 15/21 is 57/70.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 21 is 210

    Next, find the equivalent fraction of both fractional numbers with denominator 210
  2. For the 1st fraction, since 10 × 21 = 210,
    1/10 = 1 × 21/10 × 21 = 21/210
  3. Likewise, for the 2nd fraction, since 21 × 10 = 210,
    15/21 = 15 × 10/21 × 10 = 150/210
  4. Add the two like fractions:
    21/210 + 150/210 = 21 + 150/210 = 171/210
  5. 171/210 simplified gives 57/70
  6. So, 1/10 + 15/21 = 57/70

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