Subtract 2/8 from 72/45
1st number: 1 27/45, 2nd number: 2/8
72/45 - 2/8 is 27/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
72/45 = 72 × 8/45 × 8 = 576/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
2/8 = 2 × 45/8 × 45 = 90/360 - Subtract the two like fractions:
576/360 - 90/360 = 576 - 90/360 = 486/360 - After reducing the fraction, the answer is 27/20
- In mixed form: 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45-4/8 72/90-2/8 72/45-2/16 72/45-6/8 72/45-2/24 72/45-10/8 72/45-2/40 72/45-14/8 72/45-2/56