Subtract 90/16 from 36/20
1st number: 1 16/20, 2nd number: 5 10/16
36/20 - 90/16 is -153/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
36/20 = 36 × 4/20 × 4 = 144/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
90/16 = 90 × 5/16 × 5 = 450/80 - Subtract the two like fractions:
144/80 - 450/80 = 144 - 450/80 = -306/80 - After reducing the fraction, the answer is -153/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20-90/16 36/40-90/16 36/20-90/32 36/60-90/16 36/20-90/48 36/20-90/80