Subtract 63/9 from 98/20
1st number: 4 18/20, 2nd number: 7 0/9
98/20 - 63/9 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
98/20 = 98 × 9/20 × 9 = 882/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
63/9 = 63 × 20/9 × 20 = 1260/180 - Subtract the two like fractions:
882/180 - 1260/180 = 882 - 1260/180 = -378/180 - After reducing the fraction, the answer is -21/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/40-63/9 98/20-63/18 98/60-63/9 98/20-63/27 98/20-63/45