Subtract 20/16 from 35/45
1st number: 35/45, 2nd number: 1 4/16
35/45 - 20/16 is -17/36.
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,
35/45 = 35 × 16/45 × 16 = 560/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
20/16 = 20 × 45/16 × 45 = 900/720 - Subtract the two like fractions:
560/720 - 900/720 = 560 - 900/720 = -340/720 - After reducing the fraction, the answer is -17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-20/16 35/45-40/16 35/90-20/16 35/45-20/32 35/45-60/16 35/45-20/48 35/45-20/80