Subtract 1/72 from 63/45
1st number: 1 18/45, 2nd number: 1/72
63/45 - 1/72 is 499/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
63/45 = 63 × 8/45 × 8 = 504/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
1/72 = 1 × 5/72 × 5 = 5/360 - Subtract the two like fractions:
504/360 - 5/360 = 504 - 5/360 = 499/360 - In mixed form: 1139/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/45-2/72 63/90-1/72 63/45-3/72 63/45-5/72 63/45-7/72