Subtract 81/80 from 30/35
1st number: 30/35, 2nd number: 1 1/80
30/35 - 81/80 is -87/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 35 × 16 = 560,
30/35 = 30 × 16/35 × 16 = 480/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Subtract the two like fractions:
480/560 - 567/560 = 480 - 567/560 = -87/560
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