Subtract 35/16 from 20/45
1st number: 20/45, 2nd number: 2 3/16
20/45 - 35/16 is -251/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
20/45 = 20 × 16/45 × 16 = 320/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
35/16 = 35 × 45/16 × 45 = 1575/720 - Subtract the two like fractions:
320/720 - 1575/720 = 320 - 1575/720 = -1255/720 - After reducing the fraction, the answer is -251/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45-35/16 20/45-70/16 20/90-35/16 20/45-35/32 60/45-35/16 20/45-35/48 20/45-35/80