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Add 12/70 and 16/90

12/70 + 16/90 is 22/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 90 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 70 × 9 = 630,
    12/70 = 12 × 9/70 × 9 = 108/630
  3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
    16/90 = 16 × 7/90 × 7 = 112/630
  4. Add the two like fractions:
    108/630 + 112/630 = 108 + 112/630 = 220/630
  5. 220/630 simplified gives 22/63
  6. So, 12/70 + 16/90 = 22/63

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