Subtract 35/20 from 35/45
1st number: 35/45, 2nd number: 1 15/20
35/45 - 35/20 is -35/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
35/45 = 35 × 4/45 × 4 = 140/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
35/20 = 35 × 9/20 × 9 = 315/180 - Subtract the two like fractions:
140/180 - 315/180 = 140 - 315/180 = -175/180 - After reducing the fraction, the answer is -35/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-35/20 35/45-70/20 35/90-35/20 35/45-35/40 35/45-35/60