Subtract 90/40 from 40/36
1st number: 1 4/36, 2nd number: 2 10/40
40/36 - 90/40 is -41/36.
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,
40/36 = 40 × 10/36 × 10 = 400/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Subtract the two like fractions:
400/360 - 810/360 = 400 - 810/360 = -410/360 - After reducing the fraction, the answer is -41/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/36-90/40 40/72-90/40 40/36-90/80