Subtract 30/40 from 4/35
4/35 - 30/40 is -89/140.
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,
4/35 = 4 × 8/35 × 8 = 32/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Subtract the two like fractions:
32/280 - 210/280 = 32 - 210/280 = -178/280 - After reducing the fraction, the answer is -89/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/35-30/40 4/35-60/40 4/70-30/40 4/35-30/80 12/35-30/40 4/35-90/40 20/35-30/40 28/35-30/40