Subtract 27/40 from 8/45
8/45 - 27/40 is -179/360.
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,
8/45 = 8 × 8/45 × 8 = 64/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Subtract the two like fractions:
64/360 - 243/360 = 64 - 243/360 = -179/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45-27/40 8/45-54/40 8/90-27/40 8/45-27/80 24/45-27/40 8/45-81/40 40/45-27/40 56/45-27/40