Subtract 36/10 from 84/21
1st number: 4 0/21, 2nd number: 3 6/10
84/21 - 36/10 is 2/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
84/21 = 84 × 10/21 × 10 = 840/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
36/10 = 36 × 21/10 × 21 = 756/210 - Subtract the two like fractions:
840/210 - 756/210 = 840 - 756/210 = 84/210 - After reducing the fraction, the answer is 2/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21-72/10 84/42-36/10 84/21-36/20 84/63-36/10 84/21-36/30 84/21-36/50 84/21-36/70