Subtract 20/40 from 32/30
1st number: 1 2/30, 2nd number: 20/40
32/30 - 20/40 is 17/30.
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,
32/30 = 32 × 4/30 × 4 = 128/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
20/40 = 20 × 3/40 × 3 = 60/120 - Subtract the two like fractions:
128/120 - 60/120 = 128 - 60/120 = 68/120 - After reducing the fraction, the answer is 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/30-20/40 32/60-20/40 32/30-20/80 96/30-20/40 32/30-60/40 32/90-20/40