Subtract 24/40 from 6/90
6/90 - 24/40 is -8/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
6/90 = 6 × 4/90 × 4 = 24/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
24/40 = 24 × 9/40 × 9 = 216/360 - Subtract the two like fractions:
24/360 - 216/360 = 24 - 216/360 = -192/360 - After reducing the fraction, the answer is -8/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/90-24/40 6/90-48/40 6/90-24/80 18/90-24/40 6/90-72/40 30/90-24/40 42/90-24/40