Subtract 70/32 from 1/21
1st number: 1/21, 2nd number: 2 6/32
1/21 - 70/32 is -719/336.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
1/21 = 1 × 32/21 × 32 = 32/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
70/32 = 70 × 21/32 × 21 = 1470/672 - Subtract the two like fractions:
32/672 - 1470/672 = 32 - 1470/672 = -1438/672 - After reducing the fraction, the answer is -719/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/21-70/32 1/42-70/32 1/21-70/64 3/21-70/32 1/63-70/32 1/21-70/96 5/21-70/32 7/21-70/32