Subtract 21/32 from 70/18
1st number: 3 16/18, 2nd number: 21/32
70/18 - 21/32 is 931/288.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 32 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 18 × 16 = 288,
70/18 = 70 × 16/18 × 16 = 1120/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
21/32 = 21 × 9/32 × 9 = 189/288 - Subtract the two like fractions:
1120/288 - 189/288 = 1120 - 189/288 = 931/288 - In mixed form: 367/288
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-42/32 70/36-21/32 70/18-21/64 70/18-63/32 70/54-21/32 70/18-21/96 70/90-21/32