Subtract 75/27 from 10/7
1st number: 1 3/7, 2nd number: 2 21/27
10/7 - 75/27 is -85/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
10/7 = 10 × 27/7 × 27 = 270/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
75/27 = 75 × 7/27 × 7 = 525/189 - Subtract the two like fractions:
270/189 - 525/189 = 270 - 525/189 = -255/189 - After reducing the fraction, the answer is -85/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7-75/27 10/14-75/27 10/7-75/54 30/7-75/27 10/21-75/27 10/7-75/81 50/7-75/27 10/35-75/27 70/7-75/27 10/49-75/27