Subtract 60/40 from 30/35
1st number: 30/35, 2nd number: 1 20/40
30/35 - 60/40 is -9/14.
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,
30/35 = 30 × 8/35 × 8 = 240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
60/40 = 60 × 7/40 × 7 = 420/280 - Subtract the two like fractions:
240/280 - 420/280 = 240 - 420/280 = -180/280 - After reducing the fraction, the answer is -9/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/35-60/40 30/70-60/40 30/35-60/80 90/35-60/40