Subtract 40/10 from 21/48
1st number: 21/48, 2nd number: 4 0/10
21/48 - 40/10 is -57/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 10 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Likewise, for the 2nd fraction, since 10 × 24 = 240,
40/10 = 40 × 24/10 × 24 = 960/240 - Subtract the two like fractions:
105/240 - 960/240 = 105 - 960/240 = -855/240 - After reducing the fraction, the answer is -57/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48-40/10 21/48-80/10 21/96-40/10 21/48-40/20 63/48-40/10 21/48-40/30 21/48-40/50 21/48-40/70