Subtract 81/35 from 18/80
1st number: 18/80, 2nd number: 2 11/35
18/80 - 81/35 is -117/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 35 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560 - Likewise, for the 2nd fraction, since 35 × 16 = 560,
81/35 = 81 × 16/35 × 16 = 1296/560 - Subtract the two like fractions:
126/560 - 1296/560 = 126 - 1296/560 = -1170/560 - After reducing the fraction, the answer is -117/56
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