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Add 21/45 and 56/80

21/45 + 56/80 is 7/6.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 80 is 720

    Next, find the equivalent fraction of both fractional numbers with denominator 720
  2. For the 1st fraction, since 45 × 16 = 720,
    21/45 = 21 × 16/45 × 16 = 336/720
  3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
    56/80 = 56 × 9/80 × 9 = 504/720
  4. Add the two like fractions:
    336/720 + 504/720 = 336 + 504/720 = 840/720
  5. 840/720 simplified gives 7/6
  6. So, 21/45 + 56/80 = 7/6
    In mixed form: 11/6

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