Subtract 35/40 from 8/30
8/30 - 35/40 is -73/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
8/30 = 8 × 4/30 × 4 = 32/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
35/40 = 35 × 3/40 × 3 = 105/120 - Subtract the two like fractions:
32/120 - 105/120 = 32 - 105/120 = -73/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-35/40 8/30-70/40 8/60-35/40 8/30-35/80 24/30-35/40 8/90-35/40 40/30-35/40 56/30-35/40