Subtract 20/84 from 75/72
1st number: 1 3/72, 2nd number: 20/84
75/72 - 20/84 is 45/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
75/72 = 75 × 7/72 × 7 = 525/504 - Likewise, for the 2nd fraction, since 84 × 6 = 504,
20/84 = 20 × 6/84 × 6 = 120/504 - Subtract the two like fractions:
525/504 - 120/504 = 525 - 120/504 = 405/504 - After reducing the fraction, the answer is 45/56
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