Subtract 2/20 from 36/90
36/90 - 2/20 is 3/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
36/90 = 36 × 2/90 × 2 = 72/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
2/20 = 2 × 9/20 × 9 = 18/180 - Subtract the two like fractions:
72/180 - 18/180 = 72 - 18/180 = 54/180 - After reducing the fraction, the answer is 3/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90-2/20 36/90-4/20 36/90-2/40 36/90-6/20 36/90-2/60 36/90-10/20 36/90-14/20