Subtract 12/7 from 63/3
1st number: 21 0/3, 2nd number: 1 5/7
63/3 - 12/7 is 135/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
63/3 = 63 × 7/3 × 7 = 441/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
12/7 = 12 × 3/7 × 3 = 36/21 - Subtract the two like fractions:
441/21 - 36/21 = 441 - 36/21 = 405/21 - After reducing the fraction, the answer is 135/7
- In mixed form: 192/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/3-24/7 63/6-12/7 63/3-12/14 63/3-36/7 63/9-12/7 63/3-12/21 63/3-60/7 63/15-12/7 63/3-12/35 63/3-84/7 63/21-12/7 63/3-12/49