Subtract 90/7 from 27/80
1st number: 27/80, 2nd number: 12 6/7
27/80 - 90/7 is -7011/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
27/80 = 27 × 7/80 × 7 = 189/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
90/7 = 90 × 80/7 × 80 = 7200/560 - Subtract the two like fractions:
189/560 - 7200/560 = 189 - 7200/560 = -7011/560
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