Subtract 40/4 from 45/10
1st number: 4 5/10, 2nd number: 10 0/4
45/10 - 40/4 is -11/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
45/10 = 45 × 2/10 × 2 = 90/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
40/4 = 40 × 5/4 × 5 = 200/20 - Subtract the two like fractions:
90/20 - 200/20 = 90 - 200/20 = -110/20 - After reducing the fraction, the answer is -11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-40/4 45/10-80/4 45/20-40/4 45/10-40/8 45/30-40/4 45/10-40/12 45/50-40/4 45/10-40/20 45/70-40/4 45/10-40/28