Subtract 4/36 from 90/40
1st number: 2 10/40, 2nd number: 4/36
90/40 - 4/36 is 77/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 36 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Likewise, for the 2nd fraction, since 36 × 10 = 360,
4/36 = 4 × 10/36 × 10 = 40/360 - Subtract the two like fractions:
810/360 - 40/360 = 810 - 40/360 = 770/360 - After reducing the fraction, the answer is 77/36
- In mixed form: 25/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-8/36 90/80-4/36 90/40-4/72 90/40-12/36 90/40-20/36 90/40-28/36