Subtract 60/42 from 63/21
1st number: 3 0/21, 2nd number: 1 18/42
63/21 - 60/42 is 11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
63/21 = 63 × 2/21 × 2 = 126/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
60/42 = 60 × 1/42 × 1 = 60/42 - Subtract the two like fractions:
126/42 - 60/42 = 126 - 60/42 = 66/42 - After reducing the fraction, the answer is 11/7
- In mixed form: 14/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-60/42 63/21-60/84