Subtract 21/10 from 36/30
1st number: 1 6/30, 2nd number: 2 1/10
36/30 - 21/10 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
36/30 = 36 × 1/30 × 1 = 36/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30 - Subtract the two like fractions:
36/30 - 63/30 = 36 - 63/30 = -27/30 - After reducing the fraction, the answer is -9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30-21/10 36/30-42/10 36/60-21/10 36/30-21/20 36/30-63/10 36/90-21/10 36/30-21/30 36/30-21/50 36/30-21/70