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Add 45/72 and 21/56

45/72 + 21/56 is 1/1.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 72 and 56 is 504
  2. For the 1st fraction, since 72 × 7 = 504,
    45/72 = 45 × 7/72 × 7 = 315/504
  3. Likewise, for the 2nd fraction, since 56 × 9 = 504,
    21/56 = 21 × 9/56 × 9 = 189/504
  4. Add the two fractions:
    315/504 + 189/504 = 315 + 189/504 = 504/504
  5. 504/504 simplified gives 1/1
  6. So, 45/72 + 21/56 = 1/1

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