Subtract 81/49 from 18/60
1st number: 18/60, 2nd number: 1 32/49
18/60 - 81/49 is -663/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 49 is 2940
Next, find the equivalent fraction of both fractional numbers with denominator 2940 - For the 1st fraction, since 60 × 49 = 2940,
18/60 = 18 × 49/60 × 49 = 882/2940 - Likewise, for the 2nd fraction, since 49 × 60 = 2940,
81/49 = 81 × 60/49 × 60 = 4860/2940 - Subtract the two like fractions:
882/2940 - 4860/2940 = 882 - 4860/2940 = -3978/2940 - After reducing the fraction, the answer is -663/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/60-81/49 18/60-81/98 54/60-81/49 90/60-81/49