Subtract 49/10 from 72/40
1st number: 1 32/40, 2nd number: 4 9/10
72/40 - 49/10 is -31/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
49/10 = 49 × 4/10 × 4 = 196/40 - Subtract the two like fractions:
72/40 - 196/40 = 72 - 196/40 = -124/40 - After reducing the fraction, the answer is -31/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40-98/10 72/80-49/10 72/40-49/20 72/40-49/30 72/40-49/50 72/40-49/70