Subtract 70/7 from 3/27
1st number: 3/27, 2nd number: 10 0/7
3/27 - 70/7 is -89/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
3/27 = 3 × 7/27 × 7 = 21/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
70/7 = 70 × 27/7 × 27 = 1890/189 - Subtract the two like fractions:
21/189 - 1890/189 = 21 - 1890/189 = -1869/189 - After reducing the fraction, the answer is -89/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/27-70/7 3/54-70/7 3/27-70/14 9/27-70/7 3/81-70/7 3/27-70/21 15/27-70/7 3/27-70/35 21/27-70/7 3/27-70/49