Subtract 81/16 from 40/10
1st number: 4 0/10, 2nd number: 5 1/16
40/10 - 81/16 is -17/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
40/10 = 40 × 8/10 × 8 = 320/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Subtract the two like fractions:
320/80 - 405/80 = 320 - 405/80 = -85/80 - After reducing the fraction, the answer is -17/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/10-81/16 40/20-81/16 40/10-81/32 40/30-81/16 40/10-81/48 40/50-81/16 40/10-81/80 40/70-81/16