Subtract 1/45 from 25/40
25/40 - 1/45 is 217/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
25/40 = 25 × 9/40 × 9 = 225/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
1/45 = 1 × 8/45 × 8 = 8/360 - Subtract the two like fractions:
225/360 - 8/360 = 225 - 8/360 = 217/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40-1/45 25/40-2/45 25/80-1/45 25/40-1/90 75/40-1/45 25/40-3/45 25/40-5/45 25/40-7/45