Subtract 10/32 from 70/21
1st number: 3 7/21, 2nd number: 10/32
70/21 - 10/32 is 145/48.
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,
70/21 = 70 × 32/21 × 32 = 2240/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
10/32 = 10 × 21/32 × 21 = 210/672 - Subtract the two like fractions:
2240/672 - 210/672 = 2240 - 210/672 = 2030/672 - After reducing the fraction, the answer is 145/48
- In mixed form: 31/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-20/32 70/42-10/32 70/21-10/64 70/21-30/32 70/63-10/32 70/21-10/96 70/21-50/32 70/21-70/32