Subtract 7/40 from 45/10
1st number: 4 5/10, 2nd number: 7/40
45/10 - 7/40 is 173/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
45/10 = 45 × 4/10 × 4 = 180/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Subtract the two like fractions:
180/40 - 7/40 = 180 - 7/40 = 173/40 - In mixed form: 413/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-7/40 45/10-14/40 45/20-7/40 45/10-7/80 45/10-21/40 45/30-7/40 45/10-35/40 45/50-7/40 45/10-49/40 45/70-7/40