Subtract 40/21 from 70/96
1st number: 70/96, 2nd number: 1 19/21
70/96 - 40/21 is -395/336.
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,
70/96 = 70 × 7/96 × 7 = 490/672 - Likewise, for the 2nd fraction, since 21 × 32 = 672,
40/21 = 40 × 32/21 × 32 = 1280/672 - Subtract the two like fractions:
490/672 - 1280/672 = 490 - 1280/672 = -790/672 - After reducing the fraction, the answer is -395/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/96-80/21 70/96-40/42 70/96-40/63