Add 28/63 and 45/72
28/63 + 45/72 is 77/72.
Steps for adding fractions
- 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 - For the 1st fraction, since 63 × 8 = 504,
28/63 = 28 × 8/63 × 8 = 224/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Add the two like fractions:
224/504 + 315/504 = 224 + 315/504 = 539/504 - 539/504 simplified gives 77/72
- So, 28/63 + 45/72 = 77/72
In mixed form: 15/72
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