Subtract 32/10 from 42/40
1st number: 1 2/40, 2nd number: 3 2/10
42/40 - 32/10 is -43/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
42/40 = 42 × 1/40 × 1 = 42/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
32/10 = 32 × 4/10 × 4 = 128/40 - Subtract the two like fractions:
42/40 - 128/40 = 42 - 128/40 = -86/40 - After reducing the fraction, the answer is -43/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-32/10 42/40-64/10 42/80-32/10 42/40-32/20 42/40-96/10 42/40-32/30 42/40-32/50 42/40-32/70