Subtract 63/6 from 72/20
1st number: 3 12/20, 2nd number: 10 3/6
72/20 - 63/6 is -69/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
72/20 = 72 × 3/20 × 3 = 216/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
63/6 = 63 × 10/6 × 10 = 630/60 - Subtract the two like fractions:
216/60 - 630/60 = 216 - 630/60 = -414/60 - After reducing the fraction, the answer is -69/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40-63/6 72/20-63/12 72/60-63/6 72/20-63/18 72/20-63/30 72/20-63/42