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Add 27/45 and 21/70

27/45 + 21/70 is 9/10.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 70 is 630

    Next, find the equivalent fraction of both fractional numbers with denominator 630
  2. For the 1st fraction, since 45 × 14 = 630,
    27/45 = 27 × 14/45 × 14 = 378/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    21/70 = 21 × 9/70 × 9 = 189/630
  4. Add the two like fractions:
    378/630 + 189/630 = 378 + 189/630 = 567/630
  5. 567/630 simplified gives 9/10
  6. So, 27/45 + 21/70 = 9/10

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