Subtract 90/42 from 27/72
1st number: 27/72, 2nd number: 2 6/42
27/72 - 90/42 is -99/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
90/42 = 90 × 12/42 × 12 = 1080/504 - Subtract the two like fractions:
189/504 - 1080/504 = 189 - 1080/504 = -891/504 - After reducing the fraction, the answer is -99/56
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