Subtract 63/40 from 80/45
1st number: 1 35/45, 2nd number: 1 23/40
80/45 - 63/40 is 73/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
80/45 = 80 × 8/45 × 8 = 640/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
63/40 = 63 × 9/40 × 9 = 567/360 - Subtract the two like fractions:
640/360 - 567/360 = 640 - 567/360 = 73/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-63/40 80/45-63/80