Subtract 7/21 from 18/96
18/96 - 7/21 is -7/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 21 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 96 × 7 = 672,
18/96 = 18 × 7/96 × 7 = 126/672 - Likewise, for the 2nd fraction, since 21 × 32 = 672,
7/21 = 7 × 32/21 × 32 = 224/672 - Subtract the two like fractions:
126/672 - 224/672 = 126 - 224/672 = -98/672 - After reducing the fraction, the answer is -7/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/96-7/21 18/96-14/21 18/96-7/42 54/96-7/21 18/96-7/63 90/96-7/21 18/96-35/21 18/96-49/21