Subtract 81/7 from 9/80
1st number: 9/80, 2nd number: 11 4/7
9/80 - 81/7 is -6417/560.
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,
9/80 = 9 × 7/80 × 7 = 63/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
81/7 = 81 × 80/7 × 80 = 6480/560 - Subtract the two like fractions:
63/560 - 6480/560 = 63 - 6480/560 = -6417/560
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