Subtract 63/21 from 40/2
1st number: 20 0/2, 2nd number: 3 0/21
40/2 - 63/21 is 17/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
40/2 = 40 × 21/2 × 21 = 840/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42 - Subtract the two like fractions:
840/42 - 126/42 = 840 - 126/42 = 714/42 - After reducing the fraction, the answer is 17/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-63/21 40/4-63/21 40/2-63/42 40/6-63/21 40/10-63/21 40/14-63/21