Subtract 90/7 from 27/72
1st number: 27/72, 2nd number: 12 6/7
27/72 - 90/7 is -699/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 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 7 × 72 = 504,
90/7 = 90 × 72/7 × 72 = 6480/504 - Subtract the two like fractions:
189/504 - 6480/504 = 189 - 6480/504 = -6291/504 - After reducing the fraction, the answer is -699/56
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