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Add 45/63 and 40/72

45/63 + 40/72 is 80/63.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 63 and 72 is 504

    Next, find the equivalent fraction of both fractional numbers with denominator 504
  2. For the 1st fraction, since 63 × 8 = 504,
    45/63 = 45 × 8/63 × 8 = 360/504
  3. Likewise, for the 2nd fraction, since 72 × 7 = 504,
    40/72 = 40 × 7/72 × 7 = 280/504
  4. Add the two like fractions:
    360/504 + 280/504 = 360 + 280/504 = 640/504
  5. 640/504 simplified gives 80/63
  6. So, 45/63 + 40/72 = 80/63
    In mixed form: 117/63

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