Subtract 4/10 from 40/90
40/90 - 4/10 is 2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
40/90 = 40 × 1/90 × 1 = 40/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
4/10 = 4 × 9/10 × 9 = 36/90 - Subtract the two like fractions:
40/90 - 36/90 = 40 - 36/90 = 4/90 - After reducing the fraction, the answer is 2/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-4/10 40/90-8/10 40/90-4/20 40/90-12/10 40/90-4/30 40/90-20/10 40/90-4/50 40/90-28/10 40/90-4/70