Subtract 27/72 from 63/42
1st number: 1 21/42, 2nd number: 27/72
63/42 - 27/72 is 9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
63/42 = 63 × 12/42 × 12 = 756/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Subtract the two like fractions:
756/504 - 189/504 = 756 - 189/504 = 567/504 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
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