Subtract 42/32 from 63/21
1st number: 3 0/21, 2nd number: 1 10/32
63/21 - 42/32 is 27/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
63/21 = 63 × 32/21 × 32 = 2016/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
42/32 = 42 × 21/32 × 21 = 882/672 - Subtract the two like fractions:
2016/672 - 882/672 = 2016 - 882/672 = 1134/672 - After reducing the fraction, the answer is 27/16
- In mixed form: 111/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/21-84/32 63/42-42/32 63/21-42/64 63/21-42/96