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Add 1/10 and 21/70

1/10 + 21/70 is 2/5.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 70 is 70

    Next, find the equivalent fraction of both fractional numbers with denominator 70
  2. For the 1st fraction, since 10 × 7 = 70,
    1/10 = 1 × 7/10 × 7 = 7/70
  3. Likewise, for the 2nd fraction, since 70 × 1 = 70,
    21/70 = 21 × 1/70 × 1 = 21/70
  4. Add the two like fractions:
    7/70 + 21/70 = 7 + 21/70 = 28/70
  5. 28/70 simplified gives 2/5
  6. So, 1/10 + 21/70 = 2/5

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