Subtract 63/10 from 72/20
1st number: 3 12/20, 2nd number: 6 3/10
72/20 - 63/10 is -27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
63/10 = 63 × 2/10 × 2 = 126/20 - Subtract the two like fractions:
72/20 - 126/20 = 72 - 126/20 = -54/20 - After reducing the fraction, the answer is -27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40-63/10 72/20-63/20 72/60-63/10 72/20-63/30 72/20-63/50 72/20-63/70