Subtract 21/6 from 70/27
1st number: 2 16/27, 2nd number: 3 3/6
70/27 - 21/6 is -49/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 6 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 27 × 2 = 54,
70/27 = 70 × 2/27 × 2 = 140/54 - Likewise, for the 2nd fraction, since 6 × 9 = 54,
21/6 = 21 × 9/6 × 9 = 189/54 - Subtract the two like fractions:
140/54 - 189/54 = 140 - 189/54 = -49/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/27-42/6 70/54-21/6 70/27-21/12 70/27-63/6 70/81-21/6 70/27-21/18 70/27-21/30 70/27-21/42