Subtract 42/20 from 32/30
1st number: 1 2/30, 2nd number: 2 2/20
32/30 - 42/20 is -31/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
32/30 = 32 × 2/30 × 2 = 64/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Subtract the two like fractions:
64/60 - 126/60 = 64 - 126/60 = -62/60 - After reducing the fraction, the answer is -31/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/30-42/20 32/30-84/20 32/60-42/20 32/30-42/40 96/30-42/20 32/90-42/20 32/30-42/60