Subtract 21/48 from 48/70
48/70 - 21/48 is 139/560.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
48/70 = 48 × 24/70 × 24 = 1152/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
21/48 = 21 × 35/48 × 35 = 735/1680 - Subtract the two like fractions:
1152/1680 - 735/1680 = 1152 - 735/1680 = 417/1680 - After reducing the fraction, the answer is 139/560
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/70-21/48 48/70-42/48 48/70-21/96 48/70-63/48