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Add 28/90 and 35/70

28/90 + 35/70 is 73/90.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 90 × 7 = 630,
    28/90 = 28 × 7/90 × 7 = 196/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    35/70 = 35 × 9/70 × 9 = 315/630
  4. Add the two like fractions:
    196/630 + 315/630 = 196 + 315/630 = 511/630
  5. 511/630 simplified gives 73/90
  6. So, 28/90 + 35/70 = 73/90

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