Subtract 24/20 from 32/42
1st number: 32/42, 2nd number: 1 4/20
32/42 - 24/20 is -46/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
32/42 = 32 × 10/42 × 10 = 320/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
24/20 = 24 × 21/20 × 21 = 504/420 - Subtract the two like fractions:
320/420 - 504/420 = 320 - 504/420 = -184/420 - After reducing the fraction, the answer is -46/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/42-24/20 32/42-48/20 32/84-24/20 32/42-24/40 96/42-24/20 32/42-72/20 32/42-24/60