Subtract 21/48 from 35/42
35/42 - 21/48 is 19/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
35/42 = 35 × 8/42 × 8 = 280/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
21/48 = 21 × 7/48 × 7 = 147/336 - Subtract the two like fractions:
280/336 - 147/336 = 280 - 147/336 = 133/336 - After reducing the fraction, the answer is 19/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-21/48 35/42-42/48 35/84-21/48 35/42-21/96 35/42-63/48