Subtract 45/90 from 3/10
3/10 - 45/90 is -1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
3/10 = 3 × 9/10 × 9 = 27/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
45/90 = 45 × 1/90 × 1 = 45/90 - Subtract the two like fractions:
27/90 - 45/90 = 27 - 45/90 = -18/90 - After reducing the fraction, the answer is -1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/10-45/90 3/20-45/90 9/10-45/90 3/30-45/90 15/10-45/90 3/50-45/90 21/10-45/90 3/70-45/90