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Add 21/45 and 10/70

21/45 + 10/70 is 64/105.

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,
    21/45 = 21 × 14/45 × 14 = 294/630
  3. Likewise, for the 2nd fraction, since 70 × 9 = 630,
    10/70 = 10 × 9/70 × 9 = 90/630
  4. Add the two like fractions:
    294/630 + 90/630 = 294 + 90/630 = 384/630
  5. 384/630 simplified gives 64/105
  6. So, 21/45 + 10/70 = 64/105

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