Subtract 9/40 from 90/35
1st number: 2 20/35, 2nd number: 9/40
90/35 - 9/40 is 657/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 35 × 8 = 280,
90/35 = 90 × 8/35 × 8 = 720/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
9/40 = 9 × 7/40 × 7 = 63/280 - Subtract the two like fractions:
720/280 - 63/280 = 720 - 63/280 = 657/280 - In mixed form: 297/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35-18/40 90/70-9/40 90/35-9/80 90/35-27/40 90/35-45/40 90/35-63/40