Subtract 27/40 from 30/36
30/36 - 27/40 is 19/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
30/36 = 30 × 10/36 × 10 = 300/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Subtract the two like fractions:
300/360 - 243/360 = 300 - 243/360 = 57/360 - After reducing the fraction, the answer is 19/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/36-27/40 30/36-54/40 30/72-27/40 30/36-27/80 90/36-27/40 30/36-81/40