Subtract 48/42 from 21/2
1st number: 10 1/2, 2nd number: 1 6/42
21/2 - 48/42 is 131/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
21/2 = 21 × 21/2 × 21 = 441/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
48/42 = 48 × 1/42 × 1 = 48/42 - Subtract the two like fractions:
441/42 - 48/42 = 441 - 48/42 = 393/42 - After reducing the fraction, the answer is 131/14
- In mixed form: 95/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2-48/42 21/2-96/42 21/4-48/42 21/2-48/84 63/2-48/42 21/6-48/42 21/10-48/42 21/14-48/42